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The Syndicate Series #3
Vengeful Vows: A Dark Arranged Marriage Mafia Romance
I’d do anything to escape my current life, but an arranged marriage to the enemy might be more than I can handle. And Dominic Montclair is proving to be a different kind of trouble.
Katerina
All my life, I’ve been the Bratva Princess.
Ordered around, micromanaged, and controlled.
A doll to sit still and look pretty.
When I’m forced to marry the Syndicate boss,
I don’t know what to think.
Is this my chance for freedom,
Or is it out of the frying pan and into the fire?
Dominic Montclair is cold, calloused, and downright disapproving of me.
His gazes are laced with disdain and disappointment.
I don’t meet his standards, and he doesn’t give me a second chance.
When I finally blow up and try to slap some sense into him…
He smiles.
He promises me freedom,
But when I fight back, he revokes it.
Not because he’s controlling me,
But because he wants me.
Which wasn’t part of our arrangement.
Dominic
To save my Syndicate, I make the ultimate sacrifice.
I marry the enemy’s daughter.
The porcelain doll is the last thing I want in a wife.
She’s quiet, submissive, and boring.
The Bratva Princess won’t survive this life.
I promise her freedom and distance.
I want nothing to do with the pretty doll…
Until she raises a hand towards me.
When my tiger starts spitting fire after we wed,
I have to adjust my plan.
I mean after all, a wife should sleep beside her husband.
She may instigate fights, rebel, and occasionally stab me,
But what’s a wife for if not to keep her husband on his toes.
This marriage may have started as an alliance,
But it’s become something else entirely.
Watch me transform the Bratva Princess into the Syndicate Queen.
This is a dark, mafia romance built on an arranged marriage between enemies. Neither wanted the marriage, but neither can live without it. Intended for readers 18+.
Katerina
All my life, I’ve been the Bratva Princess.
Ordered around, micromanaged, and controlled.
A doll to sit still and look pretty.
When I’m forced to marry the Syndicate boss,
I don’t know what to think.
Is this my chance for freedom,
Or is it out of the frying pan and into the fire?
Dominic Montclair is cold, calloused, and downright disapproving of me.
His gazes are laced with disdain and disappointment.
I don’t meet his standards, and he doesn’t give me a second chance.
When I finally blow up and try to slap some sense into him…
He smiles.
He promises me freedom,
But when I fight back, he revokes it.
Not because he’s controlling me,
But because he wants me.
Which wasn’t part of our arrangement.
Dominic
To save my Syndicate, I make the ultimate sacrifice.
I marry the enemy’s daughter.
The porcelain doll is the last thing I want in a wife.
She’s quiet, submissive, and boring.
The Bratva Princess won’t survive this life.
I promise her freedom and distance.
I want nothing to do with the pretty doll…
Until she raises a hand towards me.
When my tiger starts spitting fire after we wed,
I have to adjust my plan.
I mean after all, a wife should sleep beside her husband.
She may instigate fights, rebel, and occasionally stab me,
But what’s a wife for if not to keep her husband on his toes.
This marriage may have started as an alliance,
But it’s become something else entirely.
Watch me transform the Bratva Princess into the Syndicate Queen.
This is a dark, mafia romance built on an arranged marriage between enemies. Neither wanted the marriage, but neither can live without it. Intended for readers 18+.
311 pages, Kindle Edition
Published February 3, 2026
About the author
Ellie Hallaron
5 books46 followersEllie Hallaron is an ex-engineer turned romance author based in Louisiana. She writes spicy romanced filled with strong women and men who fall to their knees for them.
She fell in love with books early on, and growing up, the only punishment that ever stuck was having them confiscated. Novels have always felt like home, first as a reader and now as a writer.
When she’s not writing, she can be found playing with her rowdy puppy, baking and cooking her newest Pinterest discovery, or regaling her friends and family with her next unhinged, hilarious, or passionate book idea.
If you’re a fan of romances filled with passion, depth, and emotional intensity, with a side a witty humor, then you’ll love Ellie Hallaron’s books.
She fell in love with books early on, and growing up, the only punishment that ever stuck was having them confiscated. Novels have always felt like home, first as a reader and now as a writer.
When she’s not writing, she can be found playing with her rowdy puppy, baking and cooking her newest Pinterest discovery, or regaling her friends and family with her next unhinged, hilarious, or passionate book idea.
If you’re a fan of romances filled with passion, depth, and emotional intensity, with a side a witty humor, then you’ll love Ellie Hallaron’s books.
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Displaying 1 - 30 of 50 reviews
January 27, 2026
Really enjoyed ! Lucky to receive an early copy! This is such a fun mafia series can’t wait for more
February 3, 2026
Vengeful Vows by Ellie Hallaron is a gripping dark romance that pulls you into the gritty world of the Syndicate and the Bratva. As the third installment in the Syndicate Series, it delivers on the high stakes, intense chemistry, and complex characters I’ve come to expect from this author.
The story follows Dominic Montclair, a hardened Syndicate leader who has sworn off marriage and romance to focus entirely on his family’s criminal empire. When a war with the Boston Bratva threatens everything he’s built, he makes the ultimate sacrifice: a marriage alliance. Enter Katerina Sokolov, the "Bratva Princess." While she appears meek and perfect on the outside, she is secretly a fierce survivor plotting revenge against her abusive father, Viktor. What starts as a cold, "business-only" arrangement quickly spirals into a possessive and passionate battle of wills.
The Dynamics: The "enemies-to-lovers" and "forced marriage" tropes are executed perfectly here. Dominic and Katerina have incredible friction—their initial mutual disgust makes the eventual payoff so much sweeter.
Katerina’s Growth: Watching Katerina transform from a woman trapped in a "gilded cage" to the "Queen of the Syndicate" was the highlight of the book. She isn’t just a damsel in distress; she is a fighter who earns her place by Dominic’s side.
Why Not 5 Stars? While the pacing is generally fast, there were a few moments in the middle where the "we can’t be together" angst felt a bit repetitive. Additionally, Dominic’s initial coldness toward Katerina was almost too effective—it took a while for me to fully warm up to him again after some of his harsher moments.
If you love dark mafia romances with "touch her and die" energy, a strong-willed heroine, and plenty of steam, Vengeful Vows is a must-read. Ellie Hallaron has created a satisfyingly "insane" romance that kept me turning pages until the very end.
Note: Be sure to check the content warnings, as this book deals with heavy themes including abuse and violence and sexual content.
The story follows Dominic Montclair, a hardened Syndicate leader who has sworn off marriage and romance to focus entirely on his family’s criminal empire. When a war with the Boston Bratva threatens everything he’s built, he makes the ultimate sacrifice: a marriage alliance. Enter Katerina Sokolov, the "Bratva Princess." While she appears meek and perfect on the outside, she is secretly a fierce survivor plotting revenge against her abusive father, Viktor. What starts as a cold, "business-only" arrangement quickly spirals into a possessive and passionate battle of wills.
The Dynamics: The "enemies-to-lovers" and "forced marriage" tropes are executed perfectly here. Dominic and Katerina have incredible friction—their initial mutual disgust makes the eventual payoff so much sweeter.
Katerina’s Growth: Watching Katerina transform from a woman trapped in a "gilded cage" to the "Queen of the Syndicate" was the highlight of the book. She isn’t just a damsel in distress; she is a fighter who earns her place by Dominic’s side.
Why Not 5 Stars? While the pacing is generally fast, there were a few moments in the middle where the "we can’t be together" angst felt a bit repetitive. Additionally, Dominic’s initial coldness toward Katerina was almost too effective—it took a while for me to fully warm up to him again after some of his harsher moments.
If you love dark mafia romances with "touch her and die" energy, a strong-willed heroine, and plenty of steam, Vengeful Vows is a must-read. Ellie Hallaron has created a satisfyingly "insane" romance that kept me turning pages until the very end.
Note: Be sure to check the content warnings, as this book deals with heavy themes including abuse and violence and sexual content.
This entire review has been hidden because of spoilers.
October 19, 2026
If I read the line „you are my wife“ one more time I’m going to pass out
January 22, 2026
4.25⭐️. Thanks to Ellie for allowing me to ARC read for you! My favorite so far in the series! Our FMC, Katya, daughter of the enemy, starts her journey locked in a cage but it’s the MMC, Dom, leader of the Syndicate, who sets her free even if it is in unconventional circumstances. Now with her able to spread her wings, she’s able to fly and be who she was always meant to be which is a kickass Queen for a Syndicate King.
Tropes:
Enemies to lovers
Arranged marriage
Forced proximity
Revenge
Not all might agree but I’m including found family.
Tropes:
Enemies to lovers
Arranged marriage
Forced proximity
Revenge
Not all might agree but I’m including found family.
January 26, 2026
I was sent this arc for an honest review
I really enjoyed Dom arrange marriage with the mafia princess. I hated her father. The way he treated her and her mother. The world building in this story is so intense. I couldn’t put this book down I read it in 3 days. I can’t wait to next brother story. This is a must read series.
I really enjoyed Dom arrange marriage with the mafia princess. I hated her father. The way he treated her and her mother. The world building in this story is so intense. I couldn’t put this book down I read it in 3 days. I can’t wait to next brother story. This is a must read series.
January 26, 2026
This is the third book in the series, and without question, my favorite of the three!!!
Katerina completely stole my heart. She is strong, fierce, quiet, and deeply observant. She has endured abuse and trauma, and watching her slowly come out of her shell was powerful and honestly beautiful. Her growth felt earned, not rushed, and her strength never needed to be loud to be felt.
Dom, the older brother who never believed love was meant for him. Katerina breaks through his walls in a way that feels natural and believable. Their connection builds steadily, and the emotional payoff is so worth it.
One thing I really appreciated in this book was the balance. In the first two books, the nicknames between couples felt a bit overdone to me, but here it was the perfect amount. Their banter was natural, and genuinely enjoyable, which made their relationship feel grounded despite the darker themes. Keep her away from knives! 🤣
The resolution involving Katerina’s abusive father was satisfying. It felt like justice without being over the top.
This book does include trigger warnings, so readers should be mindful going in.
I read this in one day and could not put it down. If you enjoy mafia romance with strong character development, emotional depth, and a slow-burn love that truly delivers, this one is absolutely worth it.
Katerina completely stole my heart. She is strong, fierce, quiet, and deeply observant. She has endured abuse and trauma, and watching her slowly come out of her shell was powerful and honestly beautiful. Her growth felt earned, not rushed, and her strength never needed to be loud to be felt.
Dom, the older brother who never believed love was meant for him. Katerina breaks through his walls in a way that feels natural and believable. Their connection builds steadily, and the emotional payoff is so worth it.
One thing I really appreciated in this book was the balance. In the first two books, the nicknames between couples felt a bit overdone to me, but here it was the perfect amount. Their banter was natural, and genuinely enjoyable, which made their relationship feel grounded despite the darker themes. Keep her away from knives! 🤣
The resolution involving Katerina’s abusive father was satisfying. It felt like justice without being over the top.
This book does include trigger warnings, so readers should be mindful going in.
I read this in one day and could not put it down. If you enjoy mafia romance with strong character development, emotional depth, and a slow-burn love that truly delivers, this one is absolutely worth it.
This entire review has been hidden because of spoilers.
January 27, 2026
Vengeful Vows, the 3rd book in The Syndicate series, is everything I wanted!
Dominic Montclair, the head of The Syndicate, is perfectly content being alone. He’s too busy with running the family business to be bogged down with nonsense.
Katarina Sokolov is the Bratva princess, her father keeps her locked away, keeping her pure until he can give her to the highest bidder.
Because of his brother’s mistakes, Dominic is forced to enter into an arranged marriage to prevent war with the Bratva. To the Bratva princess! He will never know the same life again!
If you’ve read the first two books in this series, you’ll appreciate, and be excited for, watching Dominic’s emotions come full circle (mostly frustration and annoyance, but hey, they are emotions)! Katarina is an absolute badass that keeps him on his toes by any means necessary, drives him absolutely insane, all while his family chuckles silently-waiting for him to crumble. The witty banter brings me to the edge of my seat every time!!
This series has everything you’d want in dark mafia romance. Completely unhinged MMC-✔️, badass FMC-✔️, enemies to lovers-✔️, plenty of spice-✔️
Ellie hit it out of the park with this one!
Whew, It was harder than I thought to post this review without spoilers!
Dominic Montclair, the head of The Syndicate, is perfectly content being alone. He’s too busy with running the family business to be bogged down with nonsense.
Katarina Sokolov is the Bratva princess, her father keeps her locked away, keeping her pure until he can give her to the highest bidder.
Because of his brother’s mistakes, Dominic is forced to enter into an arranged marriage to prevent war with the Bratva. To the Bratva princess! He will never know the same life again!
If you’ve read the first two books in this series, you’ll appreciate, and be excited for, watching Dominic’s emotions come full circle (mostly frustration and annoyance, but hey, they are emotions)! Katarina is an absolute badass that keeps him on his toes by any means necessary, drives him absolutely insane, all while his family chuckles silently-waiting for him to crumble. The witty banter brings me to the edge of my seat every time!!
This series has everything you’d want in dark mafia romance. Completely unhinged MMC-✔️, badass FMC-✔️, enemies to lovers-✔️, plenty of spice-✔️
Ellie hit it out of the park with this one!
Whew, It was harder than I thought to post this review without spoilers!
January 29, 2026
When I tell you I read this in a day I mean it! I have been fortunate enough to read 2 of Ellie’s books as an ARC now. I am so excited for the next one as well!
This book was what I was looking for! I have been trying to find a mafia book with an arranged/fake marriage with tension and boy was this it! I think this one has been my favorite so far, plot and characters wise. I really like the FMC she’s a badass who knows how to put that man in his place and I was eating it up!
Tension and banter are great and so is yearning and desire ofc!
Annnnd let me say there is an infamous “fuck it” scene like need I say more…
It would be a little confusing but you could read this book without reading the first two. But this is a series that follows a band of brothers(no they aren’t in a band) so the lore is continuous.
Mafia romance ✅
Arranged marriage✅
Tension ✅
Enemies to lovers ✅
Highly recommend giving this a read!
This book was what I was looking for! I have been trying to find a mafia book with an arranged/fake marriage with tension and boy was this it! I think this one has been my favorite so far, plot and characters wise. I really like the FMC she’s a badass who knows how to put that man in his place and I was eating it up!
Tension and banter are great and so is yearning and desire ofc!
Annnnd let me say there is an infamous “fuck it” scene like need I say more…
It would be a little confusing but you could read this book without reading the first two. But this is a series that follows a band of brothers(no they aren’t in a band) so the lore is continuous.
Mafia romance ✅
Arranged marriage✅
Tension ✅
Enemies to lovers ✅
Highly recommend giving this a read!
January 20, 2026
*ARC Review!*
3.5⭐️
Okay, so if you’re even thinking about dipping your toes into mafia romance, this series is honestly the perfect place to start. It eases you into the darker elements instead of throwing you in headfirst. It’s fast-paced and a quick read — which is exactly what I look for, for a palate cleanser between other genres.
Dom is 100% the intimidating mafia boss who commands every room he walks into… but when his cinnamon roll side starts showing? Swoon. The running/training scene had me actually giggling.
Katya though… I love an underestimated FMC, especially when she turns out to be a total badass. Her wit mixed with her “I don’t take crap from anyone” energy was a vibe. Watching her prove everyone wrong was so satisfying.
Viktor, however… can absolutely burn. I cannot stand that man.
And Bash?! Excuse me??? I need his book immediately. Like, yesterday. I’m already desperate to know everything about him and I can’t wait to continue this series.
3.5⭐️
Okay, so if you’re even thinking about dipping your toes into mafia romance, this series is honestly the perfect place to start. It eases you into the darker elements instead of throwing you in headfirst. It’s fast-paced and a quick read — which is exactly what I look for, for a palate cleanser between other genres.
Dom is 100% the intimidating mafia boss who commands every room he walks into… but when his cinnamon roll side starts showing? Swoon. The running/training scene had me actually giggling.
Katya though… I love an underestimated FMC, especially when she turns out to be a total badass. Her wit mixed with her “I don’t take crap from anyone” energy was a vibe. Watching her prove everyone wrong was so satisfying.
Viktor, however… can absolutely burn. I cannot stand that man.
And Bash?! Excuse me??? I need his book immediately. Like, yesterday. I’m already desperate to know everything about him and I can’t wait to continue this series.
Review of advance copy received from Author
ARC Review - by far my fave couple so far in the series (although I'm still holding out for Bash potentially being a my fave)
This story follows the eldest mafia son who is closed off, hidden emotions, and forced into doing something he didn't really want to do...marriage! Meet the opposing mafia princess who is internally raging, headstrong and has a killer character arc.
Unlike the other 2 books in the series these two are evenly matched rather than ying and Yang and I loved that! The clashes between them just add to the tension and the game of chicken 🤣
If you are looking for tension build up, forced proximity, headstrong characters and love that you want to love then you will love this book.
This story follows the eldest mafia son who is closed off, hidden emotions, and forced into doing something he didn't really want to do...marriage! Meet the opposing mafia princess who is internally raging, headstrong and has a killer character arc.
Unlike the other 2 books in the series these two are evenly matched rather than ying and Yang and I loved that! The clashes between them just add to the tension and the game of chicken 🤣
If you are looking for tension build up, forced proximity, headstrong characters and love that you want to love then you will love this book.
January 21, 2026
This is my favorite of the series so far!! Dominic and Katarina are a force to be reckoned with. He’s grumpy and doesn’t believe he needs anyone, especially a woman. Their marriage is just a means to an end. But oh how I loved watching Katarina come into her own and stand up to a man that others never dared to. I even found her boldness quite funny at times. I would absolutely recommend this book. I can’t wait for the fourth book to come out. Kudos to Ellie Halperin for writing such a great series with great main characters and great side characters as well. PS please tell me Nic finds a special someone.
Review of advance copy received from Author
This mafia dark romance stands out for its flawless execution and compelling character dynamics. The female lead is refreshingly strong and unapologetically badass, perfectly matching the intensity of the male protagonist. Their relationship is fearless and well-balanced, creating a powerful on-page chemistry. Despite a few questionable decisions by Dom, the dynamic remains entertaining
Especially watching a cold, ruthless syndicate boss turn into an overprotective, slightly sassy husband who is clearly wrapped around his wife’s finger.
Especially watching a cold, ruthless syndicate boss turn into an overprotective, slightly sassy husband who is clearly wrapped around his wife’s finger.
February 2, 2026
I loved this book! Dare I say it was my favorite of the series?
I love a strong FMC that’s not afraid to stand up for herself. Katerina was 100% girl power. i also loved seeing Dominic’s personality flourish, as he was previously so calm and cold. The only downside to ARC reading this is that I have to wait for Bashes book 😭
Tropes
Virgin FMC
Syndicate and Bravta
Grumpy x Grumpy
Strong FMC that can fight
…she stabs him?
Happy ending
I love a strong FMC that’s not afraid to stand up for herself. Katerina was 100% girl power. i also loved seeing Dominic’s personality flourish, as he was previously so calm and cold. The only downside to ARC reading this is that I have to wait for Bashes book 😭
Tropes
Virgin FMC
Syndicate and Bravta
Grumpy x Grumpy
Strong FMC that can fight
…she stabs him?
Happy ending
July 24, 2026
4.5 ⭐️
This book was such a fun surprise! It was funny, well-paced, and had a strong storyline from beginning to end. My favorite part was how strong and fierce the FMC was and her dynamic with the MMC. Their banter was absolutely top-notch and kept me smiling and laughing throughout. Definitely a book I’d recommend!
This book was such a fun surprise! It was funny, well-paced, and had a strong storyline from beginning to end. My favorite part was how strong and fierce the FMC was and her dynamic with the MMC. Their banter was absolutely top-notch and kept me smiling and laughing throughout. Definitely a book I’d recommend!
Review of advance copy received from Author
This is my honest review of this book! I absolutely loved this book. I could not put it down! I devoured this book so fast because it was so good. It kept me on the edge of my seat!!! It has an arranged marriage, over protective husband, and the mafia! Plus, a few stabbings. If you love dark mafia romance just as much as I do: you need to read this book! I can promise you that you will love it! He married a doll, but fell in love with a tiger! Do yourself a favor, and read this book!!!
Review of advance copy received from Author
This is the third book of this series and my favorite so far. If you enjoy mafia, arranged marriage, you will enjoy this book. I loved their banter.
February 5, 2026
This was a good addition to this series. I really do love a mafia romance book.
June 7, 2026
I loved how fiery Katerina was , how she changed from the submissive girl to the fighter one , and I don't see it much in Maria arranged marriage, they rather be a broken angel or a badass from the start till the end . Katerina was different in a good way I loved how she worked hard to gain strength and become a strong woman that doesn't need a men's pity .
Dominc was acceptable I can't say that I love him , but he's not bad too . He did some good things to her such as the apology letter and I appreciate that .
But one thing that didn't clock into my mind was how could he doubt her loyalty ? Bro you knew that she didn't ask you anything about work , she didn't even agree to marry you in the first place , she wanted to be as far as possible form you but you keep dragging her to your bedroom, you doubted that she didn't have a good relationship with her father, and everyone told you that Viktor is a bad men , you saw her INJURED after her father beaten her and you still call her a traitor just because Viktor told you so , the men that you hate and the men who hurt your wife ? If it was someone firm his brothers I would say maybe he'll believe him because it's his brother , but you believe that piece of shit rather than trusting the women you liked ? I'm sorry I can't handle this . And you ordered your men to put her in the basement?! Ohhhh boooy you really screw up!
I hated him for this .
Dominc was acceptable I can't say that I love him , but he's not bad too . He did some good things to her such as the apology letter and I appreciate that .
But one thing that didn't clock into my mind was how could he doubt her loyalty ? Bro you knew that she didn't ask you anything about work , she didn't even agree to marry you in the first place , she wanted to be as far as possible form you but you keep dragging her to your bedroom, you doubted that she didn't have a good relationship with her father, and everyone told you that Viktor is a bad men , you saw her INJURED after her father beaten her and you still call her a traitor just because Viktor told you so , the men that you hate and the men who hurt your wife ? If it was someone firm his brothers I would say maybe he'll believe him because it's his brother , but you believe that piece of shit rather than trusting the women you liked ? I'm sorry I can't handle this . And you ordered your men to put her in the basement?! Ohhhh boooy you really screw up!
I hated him for this .
January 22, 2026
This is a great Mafia story, I absolutely enjoyed reading this book.
We have Dominic who is the Dom of the Syndicate who is trying to get back in peace with the Russian Bratva. His best solution is to offer a Marriage between him and anybody the Pakhan is choosing.
Unless Dominic, Victor has no love or protective instincts about his family and is eager to agree by marrying off his only daughter.
Dominic was not impressed with Katerina, due to her behavior and clothes, which have been drilled in by her father. He makes it very clear that this marriage is only for convenience and that each one of them will life a separate life. Victor however has plans on using her as spy and wants her help in taking down the Syndicate.
As very often Mafia men underestimate females. Katarina appears weak, with no power, however she showed her husband pretty fast by stabbing him in the leg. Slowly she is planning her revenge, because no one knows the hate she has for her father and it is surprising for everyone. She is a very strong FMC, for my personal taste she was the reason why this book did not received 5 stars from me, because her gained strength was to fast. Dominic for me was just amazing, the things he reached her, showed her what family means and encouraged and was the first person ever believing in her.
Spice in this book is a solid 3🌶️🌶️🌶️
Thank you to the Author for letting me ARC read this beautiful book. This is my personal opinion and I have not received payment to leave an honest review.
We have Dominic who is the Dom of the Syndicate who is trying to get back in peace with the Russian Bratva. His best solution is to offer a Marriage between him and anybody the Pakhan is choosing.
Unless Dominic, Victor has no love or protective instincts about his family and is eager to agree by marrying off his only daughter.
Dominic was not impressed with Katerina, due to her behavior and clothes, which have been drilled in by her father. He makes it very clear that this marriage is only for convenience and that each one of them will life a separate life. Victor however has plans on using her as spy and wants her help in taking down the Syndicate.
As very often Mafia men underestimate females. Katarina appears weak, with no power, however she showed her husband pretty fast by stabbing him in the leg. Slowly she is planning her revenge, because no one knows the hate she has for her father and it is surprising for everyone. She is a very strong FMC, for my personal taste she was the reason why this book did not received 5 stars from me, because her gained strength was to fast. Dominic for me was just amazing, the things he reached her, showed her what family means and encouraged and was the first person ever believing in her.
Spice in this book is a solid 3🌶️🌶️🌶️
Thank you to the Author for letting me ARC read this beautiful book. This is my personal opinion and I have not received payment to leave an honest review.
Review of advance copy received from Author
Vengeful Vows is a fiery mafia romance packed with forced marriage, obsession, power struggles, and explosive chemistry.
Dominic Montclair, Dom of the Syndicate, agrees to a political marriage with the Russian Bratva to prevent an all-out war. His bride is Katerina Ivanov, daughter of the brutal Russian leader Viktor. On the surface, Katerina appears delicate and controlled—dressed like a porcelain doll and seemingly obedient. But behind closed doors, she is anything but weak.
From the moment they’re alone after the wedding, Katerina’s sharp tongue, defiance, and barely restrained fury catch Dominic completely off guard. He quickly realizes his wife isn’t fragile—she’s fire. Their marriage turns into a constant battle of dominance, desire, and power, and Dominic is more than willing to play along.
The chemistry between them is intense and often explosive. One moment that perfectly captures their dynamic is when Katerina stabs Dominic during dinner—and instead of fear, he’s fascinated. Their relationship thrives on provocation, tension, and passion, with both refusing to submit easily. Dominic’s possessiveness is matched only by Katerina’s refusal to be controlled, and watching them clash is wildly entertaining.
As their bond deepens, the story takes a darker turn when Viktor resurfaces, demanding Katerina betray her husband. Her past abuse is revealed in heartbreaking ways, and Dominic’s reaction to discovering the truth is pure rage and devotion. His loyalty to Katerina is unwavering, even when doubts are planted and secrets threaten to tear them apart.
The final act delivers violence, revenge, and a deeply satisfying emotional payoff. Katerina steps fully into her power, Viktor finally meets his end, and Dominic proves that his loyalty to his wife outweighs treaties, politics, and alliances. Their relationship ends not in submission, but in mutual ownership and choice.
The ending balances dark humor, passion, and chaos perfectly, leaving me desperate for the next installment. Vengeful Vows is intense, spicy, and unapologetically dramatic—perfect for readers who love dominant couples, morally gray men, and fierce heroines who refuse to be broken.
🔥 Highly addictive and impossible to put down 🔥
@authorelliehallaron
Dominic Montclair, Dom of the Syndicate, agrees to a political marriage with the Russian Bratva to prevent an all-out war. His bride is Katerina Ivanov, daughter of the brutal Russian leader Viktor. On the surface, Katerina appears delicate and controlled—dressed like a porcelain doll and seemingly obedient. But behind closed doors, she is anything but weak.
From the moment they’re alone after the wedding, Katerina’s sharp tongue, defiance, and barely restrained fury catch Dominic completely off guard. He quickly realizes his wife isn’t fragile—she’s fire. Their marriage turns into a constant battle of dominance, desire, and power, and Dominic is more than willing to play along.
The chemistry between them is intense and often explosive. One moment that perfectly captures their dynamic is when Katerina stabs Dominic during dinner—and instead of fear, he’s fascinated. Their relationship thrives on provocation, tension, and passion, with both refusing to submit easily. Dominic’s possessiveness is matched only by Katerina’s refusal to be controlled, and watching them clash is wildly entertaining.
As their bond deepens, the story takes a darker turn when Viktor resurfaces, demanding Katerina betray her husband. Her past abuse is revealed in heartbreaking ways, and Dominic’s reaction to discovering the truth is pure rage and devotion. His loyalty to Katerina is unwavering, even when doubts are planted and secrets threaten to tear them apart.
The final act delivers violence, revenge, and a deeply satisfying emotional payoff. Katerina steps fully into her power, Viktor finally meets his end, and Dominic proves that his loyalty to his wife outweighs treaties, politics, and alliances. Their relationship ends not in submission, but in mutual ownership and choice.
The ending balances dark humor, passion, and chaos perfectly, leaving me desperate for the next installment. Vengeful Vows is intense, spicy, and unapologetically dramatic—perfect for readers who love dominant couples, morally gray men, and fierce heroines who refuse to be broken.
🔥 Highly addictive and impossible to put down 🔥
@authorelliehallaron
This entire review has been hidden because of spoilers.
October 25, 2026
The best book in this series!
The story picks up after Dominic Montclair, the eldest son, leader of the Syndicate, and the King of the underworld, is forced to prevent bloodshed of the underworld due to war between organizations following what his younger brother, Roman, did to the Bratva to find his wife, Cecilia.
Dominic has never imagined himself getting married. To him, marriage is a chore, and having a weakness that others can exploit is the last thing he wants. However, to protect his family and the Syndicate, he makes the ultimate sacrifice: agreeing to marry a Bratva woman.
When he approaches Viktor Sokolov, the Bratva leader, with the marriage proposal, Dominic never expects Viktor to offer his own 23-year-old daughter, Katerina, the Bratva Princess, instead of some other Bratva girl.
Dominic agrees to the arrangement, never imagining that his wife in name only would eventually become his everything. She becomes his Syndicate Queen, his world, and the woman for whom he would burn the world down. A cliché in itself, but one that works!
Dominic is cold and stoic, Matthias is cocky and arrogant, and Roman is hot-headed and wrathful. Bash, however, is different from his brothers. He is laid-back, calm, and happy.
I liked Katerina for her ability to adapt to difficult situations without ever backing down. She is fiercely loyal and strong-willed. I also loved her relationship with Damien Montclair. Having never received a father's love from Viktor, she finds that affection in her father-in-law instead. Damien has had only a small role in the previous books, but here we finally get to know the real him, which was a lovely addition to the story.
Overall, this was an enjoyable read and, for me, the best book in the series so far. Definitely a good one-time read!
The story picks up after Dominic Montclair, the eldest son, leader of the Syndicate, and the King of the underworld, is forced to prevent bloodshed of the underworld due to war between organizations following what his younger brother, Roman, did to the Bratva to find his wife, Cecilia.
Dominic has never imagined himself getting married. To him, marriage is a chore, and having a weakness that others can exploit is the last thing he wants. However, to protect his family and the Syndicate, he makes the ultimate sacrifice: agreeing to marry a Bratva woman.
When he approaches Viktor Sokolov, the Bratva leader, with the marriage proposal, Dominic never expects Viktor to offer his own 23-year-old daughter, Katerina, the Bratva Princess, instead of some other Bratva girl.
Dominic agrees to the arrangement, never imagining that his wife in name only would eventually become his everything. She becomes his Syndicate Queen, his world, and the woman for whom he would burn the world down. A cliché in itself, but one that works!
Dominic is cold and stoic, Matthias is cocky and arrogant, and Roman is hot-headed and wrathful. Bash, however, is different from his brothers. He is laid-back, calm, and happy.
I liked Katerina for her ability to adapt to difficult situations without ever backing down. She is fiercely loyal and strong-willed. I also loved her relationship with Damien Montclair. Having never received a father's love from Viktor, she finds that affection in her father-in-law instead. Damien has had only a small role in the previous books, but here we finally get to know the real him, which was a lovely addition to the story.
Overall, this was an enjoyable read and, for me, the best book in the series so far. Definitely a good one-time read!
Review of advance copy received from Author
Thank you Ellie Hallaron for the ARC of this~ here's my honest review:
enemies ⚔️ to arranged marriage 💍 to stabbing 🔪 to lovers ❤️🔥?!
He falls first & she falls even harder! He's hella down bad for her too?! Something about when the MMC get turned on from how fiery the FMC can be always has me giggling & kicking my feet like I love that. Like lowkey he's a softy for her but also touch my WIFE & I'll unalive you energy AHHH love it. The banter was so fun it has me wanting to keep reading I literally read it all in one sitting because I didn't want to stop reading. Also my favorite moment "go shopping..." what's my budget?" "There isn't one. The card doesn't have a limit." 😱 I was literally squealing how I wish that was me fr. I could literally yap more about this book but honestly don't want to spoil or anything because I feel like going in blind how I did for this made it fun! They mention back the characters from the previous two books but this definitely can be read alone, but it is nice to see & hear about the previous characters if you liked them as well & read those books~ also I enjoy when an FMC is a baddie & not some weak princess waiting for someone to save her type person 🙂↕️ OH! & the spicy scenes omg.. 🥵 I feel so attached to this couple now I literally read this in one sitting because I kept wanting to know what will happen next between the two & where this story was going! What a fun ride this book was to start 2026!
enemies ⚔️ to arranged marriage 💍 to stabbing 🔪 to lovers ❤️🔥?!
He falls first & she falls even harder! He's hella down bad for her too?! Something about when the MMC get turned on from how fiery the FMC can be always has me giggling & kicking my feet like I love that. Like lowkey he's a softy for her but also touch my WIFE & I'll unalive you energy AHHH love it. The banter was so fun it has me wanting to keep reading I literally read it all in one sitting because I didn't want to stop reading. Also my favorite moment "go shopping..." what's my budget?" "There isn't one. The card doesn't have a limit." 😱 I was literally squealing how I wish that was me fr. I could literally yap more about this book but honestly don't want to spoil or anything because I feel like going in blind how I did for this made it fun! They mention back the characters from the previous two books but this definitely can be read alone, but it is nice to see & hear about the previous characters if you liked them as well & read those books~ also I enjoy when an FMC is a baddie & not some weak princess waiting for someone to save her type person 🙂↕️ OH! & the spicy scenes omg.. 🥵 I feel so attached to this couple now I literally read this in one sitting because I kept wanting to know what will happen next between the two & where this story was going! What a fun ride this book was to start 2026!
February 4, 2026
Vengeful Vows is a compelling addition to Ellie Hallaron’s The Syndicate Series, delivering a tense, emotionally charged arranged-marriage romance set against the ruthless backdrop of organized crime. As the third installment, it deepens the world of the Syndicate while shifting the focus to Katerina, a Bratva princess desperate for autonomy, and Dominic Montclair, a cold, controlled Syndicate boss bound by duty and power.
What stands out most is Katerina’s arc. Her hope that marriage might grant her freedom—only to trap her in a different kind of cage—adds real emotional weight to the story. Dominic’s initial disapproval and emotional distance create a slow-burn dynamic that’s frustrating in the best way, especially as his carefully maintained detachment begins to crack. Their relationship is layered with tension, power struggles, and reluctant desire, making their interactions consistently engaging.
While the pacing occasionally slows and some familiar tropes make the plot feel predictable at times, the chemistry between the leads and the darker, morally complex tone keep the story gripping. Vengeful Vows may not reinvent the genre, but it executes its themes with confidence and heart. Fans of mafia romance, arranged marriages, and emotionally guarded heroes will find this a satisfying and immersive read—and a strong continuation of the series
What stands out most is Katerina’s arc. Her hope that marriage might grant her freedom—only to trap her in a different kind of cage—adds real emotional weight to the story. Dominic’s initial disapproval and emotional distance create a slow-burn dynamic that’s frustrating in the best way, especially as his carefully maintained detachment begins to crack. Their relationship is layered with tension, power struggles, and reluctant desire, making their interactions consistently engaging.
While the pacing occasionally slows and some familiar tropes make the plot feel predictable at times, the chemistry between the leads and the darker, morally complex tone keep the story gripping. Vengeful Vows may not reinvent the genre, but it executes its themes with confidence and heart. Fans of mafia romance, arranged marriages, and emotionally guarded heroes will find this a satisfying and immersive read—and a strong continuation of the series
This entire review has been hidden because of spoilers.
Review of advance copy received from Author
Katrina goes from doll like Bratva princess to badass Syndicate queen; alongside her the man who had no intentions of giving her the time of day but fell first anyways.
More buildup 😮💨 than spice 🌶️ but seriously, who would complain 🥵
She has Dom wrapped around her finger from the time she stabs him during dinner. He sees a beautiful fighter, she sees her chance of freedom.
His family embraces her without question, a feeling of love that she had not experienced since her mother’s passing.
An arranged marriage with insane personal growth of both participant’s; all to end a war Dom’s brother started (read deceitful desires for more of that).
Could definitely be read as a standalone but highly recommend reading about the first two syndicate brothers before reading Dom’s story; can’t wait to see what is in store for Bash in the next one 🫣
I don’t wanna give any spoilers; but all my mafia romance lovers who love chemistry SET A REMINDER
Release date: February 3rd
More buildup 😮💨 than spice 🌶️ but seriously, who would complain 🥵
She has Dom wrapped around her finger from the time she stabs him during dinner. He sees a beautiful fighter, she sees her chance of freedom.
His family embraces her without question, a feeling of love that she had not experienced since her mother’s passing.
An arranged marriage with insane personal growth of both participant’s; all to end a war Dom’s brother started (read deceitful desires for more of that).
Could definitely be read as a standalone but highly recommend reading about the first two syndicate brothers before reading Dom’s story; can’t wait to see what is in store for Bash in the next one 🫣
I don’t wanna give any spoilers; but all my mafia romance lovers who love chemistry SET A REMINDER
Release date: February 3rd
February 6, 2026
Another fantastic mafia masterpiece by Ellie Hallaron. Vengeful Vows is book three of the Syndicate series and has become one of my favorite Mafia reads. These books are full of men who are dark, possessive, powerful and dangerous but know just how to turn up the heat. They definitely aren’t afraid to prove their worth and loyalty. And how they love with everything they are. Dominic is definitely my favorite. The way his fierceness drove him to utterly protect his wife is something so right… so masculine.
I enjoyed the relationship development between the quiet doll who became a sassy yet fiery FMC and the dominant, protective, and possessive MMC, both find themselves out of their depths as circumstances and unexpected feelings change their lives.
I highly recommend this book to those who like their mafia romance reads with a good splash of humor, sass, and spice. Now where can I find my own Dominic...
I enjoyed the relationship development between the quiet doll who became a sassy yet fiery FMC and the dominant, protective, and possessive MMC, both find themselves out of their depths as circumstances and unexpected feelings change their lives.
I highly recommend this book to those who like their mafia romance reads with a good splash of humor, sass, and spice. Now where can I find my own Dominic...
March 9, 2026
Ummmmmmmm why did I literally eat this up in a day??? This book was actually SO GOOD and I don’t understand why there are only like 60 ratings????? Dominic and Katarina are literally the definition of enemies to lovers and I love them so much for that. I mean you could FEEL the tension, the chemistry, and the absolute WANT between these two at all times. I mean come on who doesn’t want to read about a baddy FMC that will literally walk her man like a dog??? This baddy made her husband write her a formal apology letter, buy her dozens of roses, and buy her expensive jewelry all bc he made her man. Can you say swoon??????? I absolutley loved seeing these two stand up for eachother at every turn and show eachother what true love is. And can we just talk about how this man got on his knees repeatedly for her bc he worshipped the grounds she walked on!!!! I’m obsessed! I actually can’t wait to read Bash’s book!
February 4, 2026
This was my first time reading this author, and it definitely won’t be my last. I ended up buying Book 1 and Book 2 just so I could read Book 3, and I’m so glad I did because once I started, I couldn’t put it down. I loved that the author brought back characters from the previous books, it was really satisfying to see what happened to them and how their stories continued. If you’re a fan of mafia romances, this book is absolutely for you. Dominic marries to keep the peace, while Katarina is forced into the marriage. She comes across as timid and rule-following at first, but don’t be fooled, she’s the complete opposite, and that twist makes her character so compelling. This book has everything I love in a mafia romance and kept me hooked from beginning to end.
I was provided an Advance Reader Copy (ARC) in exchange for an honest review.
I was provided an Advance Reader Copy (ARC) in exchange for an honest review.
Review of advance copy received from Author
⭐️⭐️⭐️⭐️⭐️ | 🌶️🌶️🌶️ 3/5 Spice | ARC Review
Release date February 3rd
This was an excellent arranged-marriage mafia romance with strong enemies-to-lovers tension. Katerina’s journey from controlled Bratva princess to finding her voice was incredibly satisfying, and Dominic was cold, calculating, and magnetic in all the right ways.
The power dynamics, banter, and slow emotional shift between them were done so well. I loved watching their relationship evolve from obligation to something much deeper and more dangerous. The story was gripping, emotional, comical, and left me completely invested.
Highly recommend for readers who love mafia romance with strong character growth and intense chemistry.
Highly recommend reading books 1 and 2 to follow
The other brother’s stories as well!
Release date February 3rd
This was an excellent arranged-marriage mafia romance with strong enemies-to-lovers tension. Katerina’s journey from controlled Bratva princess to finding her voice was incredibly satisfying, and Dominic was cold, calculating, and magnetic in all the right ways.
The power dynamics, banter, and slow emotional shift between them were done so well. I loved watching their relationship evolve from obligation to something much deeper and more dangerous. The story was gripping, emotional, comical, and left me completely invested.
Highly recommend for readers who love mafia romance with strong character growth and intense chemistry.
Highly recommend reading books 1 and 2 to follow
The other brother’s stories as well!
September 19, 2026
I liked how Katerina took advantage of her freedom to train herself, to make herself stronger and more confident than the woman her father allowed her to be. I liked how Dom immediately became obsessed with his wife once he got a taste of her true personality. I also really liked how his family immediately accepted her the moment they met her.
However, Dom believing the man that abused his wife without question and throwing her in the basement made no sense. By that point of the book, Dom had learned that Viktor beat and controlled Katerina her whole life. He had seen with his own eyes the intensity of Viktor's hatred of his daughter. But one conversation immediately sways his opinion of her without giving her even a moment to speak? Nonsense.
However, Dom believing the man that abused his wife without question and throwing her in the basement made no sense. By that point of the book, Dom had learned that Viktor beat and controlled Katerina her whole life. He had seen with his own eyes the intensity of Viktor's hatred of his daughter. But one conversation immediately sways his opinion of her without giving her even a moment to speak? Nonsense.
September 5, 2026
to be fair the issue isn’t the story it’s probably me as I’m in a slump but I just couldn’t for the life of me get into this couple. The story was safe and predictable and had all the components to be great but the fmc was insufferable my god. I mean I’m proud of her for being strong and conquering her demons but she was just mean to Dominic, all the time!! I don’t mind sassy but she just was never nice to Dominic who was equally as frustrating because I get you’re down bad for your wife but she legitimately embarrassed him on so many times. The redeeming quality of this was the whole family dynamic, especially doms parents
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