Theirs: A Dark Russian Mafia Romance

by Sara Fields

410 pages, Paperback

Published February 7, 2026

About the author

See also: Romance author Sara Fields

Reviews

[Tatiana Sayodi · Rating 4 out of 5]

If you want a Mission Impossible, Lara Croft, and Spank Me Daddy cocktail, this is it.🤭🫦🔥🌶️..
Katya Volcov is sent to work with the Dragurov brothers, but when they get their hands on her... she's theirs.

[Melissa · Rating 3 out of 5]

It was ok

To me this book was just ok. It kept getting confusing with all the flashbacks. I also thought this book would be a continuation of Ours with Kara and her men not a whole new book. This could have been it’s own separate series. I feel like Kara’s story is left unfinished.

[Indy_Kitten 1 · Rating 2 out of 5]

Except it better

What happened to following the ending of the first book. It seemed like their story started new. Very confusing switching back from past to present without time lines. I was lost Viktor met Katerina at the hotel? So why it seems like the first encounter was in these other place. You lost me very disappointed it.

[Joanne Barton · Rating 5 out of 5]

“Theirs” is the second book in “The Bratva Kings Duet.” A dark Russian Mafia romance that is steamy, includes spankings and rough, intense sexual scenes that are guaranteed to leave you hot and bothered! You will not be able to put it down - I know couldn’t! This scorching mafia ménage, that has the three Dragunov brothers, Mikhail, Viktor and Andrei, pursuing Revenant liason Katarina Volkov, aka Katya, that they are all attracted to. They are determined, after individual interactions with Katya, that she will be “Theirs.”

The second book carry’s on from where the first book ended….Viktor, Kara and the three Markov brothers, Dimitri, Roman and Lev, are being held hostage by the Revenant. Katya, after she escapes, along with Andrei, the youngest of the brothers, combine to rescue everyone.

Mikhail is the eldest of the brothers. He is calm, composed, even handsome in that severe, cold pale green eyes, dark hair neatly cut, beard precisely trimmed and a stoic way that made Katya’s stomach twist despite her better judgment. “She trembled head to toe, just once, and it went straight through me.” His dark gaze with mysterious intent, and smiled, showing her that he was still utterly and terrifyingly in control. Every inch of him looks like he is carved from exacting discipline and a quiet threat.

Viktor is the middle brother. He is tall, broad-shouldered, dressed in dark clothes that fit a little too well. His brown hair is slightly tousled, as if he’d run a hand through it while deciding whether the rules applied to him. His jawline was sharp, his dark blue eyes sharper, and the smirk he wore made the room tilt sideways. He has a grin that told me he was very used to getting his way. He is trouble….”radiated the kind of energy that drew people in whether they wanted to be drawn or not, all dangerous charm wrapped in lazy confidence.”

Andrei is the youngest of the brothers and not to be underestimated. His kisses are like an act of war. He was strong, relentless and methodical. He is well built with hard muscle, tattoos, and tanned skin. His chest was broad and dusted with dark hair that narrowed to a happy trail disappearing into the waistband of his trousers. The muscles of his abdomen were a defined landscape….he was power personified. “…. tilted my chin up with two fingers, and kissed me with the sort of infuriating awareness that made my knees soften. When he pulled back, his mouth curved just slightly.”

“I’d slept with all three. Not in some planned-out way. Not as some arrangement or negotiation. Just pure, destructive, delightful chemistry and circumstance and need. It just sort of happened…all three of them at the same time.” She was theirs and they were hers!

This book had me hooked from the start! Sarah has excelled with this duet! Being a Russian Mafia Romance story, it is dark in places, violent at times, passionate in places, full of secrets, loyalties tested and let’s not forget the heat between them. You will fall in love with Katya and admire the strength of the Dragunov brothers, Mikhail, Viktor and Andrei. “I felt like a woman who had survived, chosen, and walked away with her sexy monsters on her own terms.” There is never a dull moment - you will be hooked! I know I was - cannot wait for the second book! A thoroughly enjoyable read from page to page, one chapter to the next - at times you are metaphorical “on the edge of your chair” wondering what will happen next. Overall, I would highly recommend this book and you will not be disappointed 😊

[A79senlin · Rating 5 out of 5]

Katerina “Katya” Volkov has been many things — soldier, freedom fighter, agent for shadowy organization Revenant — but she’s never been the center of someone’s world, let alone three someones. That changes when Revenant pairs her with the Dragunov brothers: Michael, the eldest and leader; Viktor, the sarcastic, reckless middle brother, and Andrei, the curious, observant youngest brother. The following two weeks find Katya and the trio fighting Revenant for their very survival, especially after two of them are abducted. Our protagonists from the first book, Kara Lennox and the brothers Markov (Dmitri, Roman and Lev), are also captured by Revenant. Katya and Andrei stage a rescue, but the action doesn’t end there.

This book was a thrill ride from the start, full of suspense, action and “action.” 🥵 It picks up where “Ours” ended, with Katya, Viktor, Kara and the Markovs having been abducted and imprisoned by Revenant. I was glad to see Kara and the Markovs because I loved their book, but I also loved Katya and the guys. Katya was a total b@d@ss and I loved that she was never treated as less than the capable, intelligent, strong, saving-everyone’s-butts woman she was. Of the Dragunovs, Andrei was my favorite. I found Viktor a bit too much sometimes and I feel like I didn’t get to know Mikhail quite as well as his brothers. Andrei and Katya made a fabulous team, in and out of the bedroom. (I almost wrote him off with his “sloppy seconds” comment, but I’m glad I didn’t.)

As with other Sara Fields books, the smexy scenes are intense, full of pleasure and pain. Throw in some high-tech murder, a terrorist group, a couple shootouts, a plane crash, one super-expensive shopping trip and more, so check your triggers.

I received a free copy of this book and am voluntarily leaving a review.

[Nicole Henderson · Rating 5 out of 5]

I received an Advanced Reader Copy and am voluntarily reviewing it. This book starts at the end of book one. It helps to read book one. Readers will see those characters again in this book. It helps to know their background. Fortunately, Ms. Fields does not make it a prerequisite. It is just nice to have. This book focuses on the Dragunovs. Mikhail, Viktor and Andrei were deeply involved in the dark areas of the world. ARCHEON wanted the Dragunovs to work with one of their top operatives. Katerina Volkov was all that and more. I absolutely loved her. She kept me in love with her throughout the book. This woman was fierce and she made sure everyone knew it. The Dragunovs could not help but be drawn to her. I was drawn to her. Kat was that girl and she proved it every time she was in the room.

This book starts in the present and takes readers to the past to see the evolution of the relationship between Katerina and Dragunovs. Let’s be honest. They were forced together. Fortunately, it was a match made in heaven. The Dragunovs wanted Kat in every way. Though she fought them, Kat also wanted someone to take charge. She wanted someone to make decisions for her. Lift the weight that she carried off her shoulders for just a moment. The Dragunovs somehow knew that. Despite that, the Dragunovs also knew how to let Kat be great. They gave her the space to be great.

This book was great. A lot of action in and out of the bedroom. The Dragunovs and Kat were great together. I loved when they caught up with the Markovs and Kara Lennox. Once they all got together, it was evident that they were in control. They all had a goal. Revenant was now the target and this group could not be stopped. ARCHOEN saw their benefit as well. Will this group come out on top? I did not see how they couldn’t. Separate each group was fierce and overcame insurmountable odds. They could do this, right? This books gives readers all the things they love about Ms. Field’s books. The steamy hotness, the action and adventure was all there. Ms. Fields does it again.

[Nicole · Rating 4 out of 5]

Theirs is the second book of The Bratva Kings Duet. A full-length steamy standalone reverse harem novel with no cheating and ends on a happily-ever-after. It includes spankings and rough, intense sexual scenes. If such material offends you, please don't buy this book. A liaison to the Dragunov Bratva becomes involved with billionaire crime boss brothers in an explicit dark romance with mature content. Smutty. Naughty. Dirty. Dark. Dangerous. Twisted. Captivating. Decadent. A fast paced, thrilling, gripping. A twisted storyline would world building individuals. An addictive and unputdownable read.
The story picks up from where it left off with pulse-pounding drama, high-octane action, non-stop twists and turns, mystery, surprises, alliance, kidnapping, secrets, captivity, possessiveness, obsession, power and control, murder, bloodshed, spice, attacks, espionage, shadow agencies, angst, tension, emotions, enemies, rivalry, violence, betrayal, backstabbing, double-cross, lies, mystery, madness, darkness, treachery, suspense, deception, punishment/discipline, dirty talking, consensual intense rough sex, kinky fuckery, spanking, revelations, revenge, retaliation, resilience, survival, push and pull, panty-melting passion and so much.
A dark Russian mafia romance, morally-grey antiheroes romance, dark Bratva romance, why-choose romance, polyamory romance, billionaire romance, romantic suspense, aged gap trope romance, forbidden romance, off-limits romance, taboo romance, action & adventure romance, reverse harem romance, and Bratva romance.

I received an advanced copy of this book via Booksprout and I am voluntarily leaving a review.

[Michele · Rating 5 out of 5]

The Bratva Kings will lure you in to intrigue, and a lot of steam!
I met Katya and the Drugonov brothers in Sara’s Ours, but this story goes deep with Katya as she has to work with the Drugonov brothers, Mikhail, Viktor and Andrei for Revenant to deliver drones to their client. What follows are betrayals between opposing forces of Revenant, their client and Archeon, as Katya escapes to launch a combined rescue with Andrei, some others and their impressive drones. I love how Viktor takes his own captivity in to his own hands along with Our’s Kara and the Markov brothers. Yet will escape be possible when there is always another organization to muddle in the dark waters with. There is definitely lots of suspense to keep you turning the pages to see if the Drugonov brothers and Katya will have a happily ever after!

[Nikki Parker · Rating 5 out of 5]

This is the second in the Bratva Kings Duet and is from the angle of the Dragunov Brothers and the Revenant liason Katarina. Viktor and Katerina have been captured along with the Markov brothers and Kara by Revenant who discover that Katarina is not easy to keep captive as she escapes to bring help. The story bounces back to a couple of weeks earlier and we get to see how the Dragunovs and Katarina have become involved and why. With more at stake than anyone realised, the only way to stay safe from Revenant is to destroy it, which will take all that they have and with help from an unexpected source. Very hot and steamy with lots of action, adventure, suspense and drama, this was the perfect ending to this duet of books.

[Johanna · Rating 5 out of 5]

Book 2 of The Bratva Kings Duet. For maximum enjoyment read the books in order.

'The only thing I’m sure of now is that by the time this is over, either we’ll all be dead… or I’ll be theirs.'

The characters drove the storyline and they were very compelling and complex and complicated and perfectly steamy together. Plot was intriguing and intense and well paced. World building continues to excel and impress. A satisfying conclusion to the duet. Enjoyed immensely and highly recommend.

Grab a copy, kick back and enjoy!.

I received a free copy of this book and am voluntarily leaving a review.

[Catherine Budd · Rating 5 out of 5]

Katya and the Dragunov brothers are selected by the Revenant to facilitate drone delivery. Katya is used to working alone for the agency and is suspicious of the three brothers.
The story has a great plot with lots of treachery, betrayal and suspense. The attraction between Katya and the brothers is off the charts.
This is a complicated story with multiple competing organizations coming into play.
The ending is spectacular.
You won't want to put your Kindle down.

I received a free copy of this book and am voluntarily leaving a review.

[Brina · Rating 3 out of 5]

The timeline was very off-putting. 2 weeks ago, 1 week ago, present day, 2 weeks ago...To me the story could have played out chronologically and the feeling of the story would have been more smooth. And more enjoyable. Don't get me wrong, I enjoyed the story very much, it was just confusing trying to keep up with what had already happened or hadn't happened yet depending on the chapter. You may have read it but in the chapter you're reading, it hadn't happened yet.
See, it's confusing. I am voluntarily leaving a review.

[Lisa A · Rating 5 out of 5]

The exciting conclusion to The Bratva Kings Duet
Katerina / Katya Volkov and the Dragunov brothers Mikhail, Viktor and Andrei are caught in the crosshairs of two dangerous shadow organizations, Revenant and Archeon. They along with their allies Kara Lennox and brothers Roman, Lev and Dmitri Markov bring destruction and devastation to the doorstep of their enemies… I received a free copy of this book. This review was posted voluntarily.

[SBee Reviews · Rating 5 out of 5]

★”Her name was Katerina Volkov, and I hadn’t stopped thinking about her since yesterday.”★

Wow, this second installment was full of espionage danger, suspense, action, and of course, this author’s signature red-hot encounters which heat up the storyline as Katya and her men throw themselves straight into the fire, do irreparable damage, and then save themselves. LOVED IT, even more than the first one! 🩷

[Jessica OBryant · Rating 5 out of 5]

Theirs by Sara Fields is a spicy hot, action-packed RH dark romance that introduces us to the mmc's, Viktor, Mikhail and Andrei Dragunov and the fmc, Katerina, aka Katya, Volkov and takes us on their journey.

It was so unbelievably well-written, great world-building, the characters were top notch and the spice was deliciously hot. Loved how possessive and alpha the guys were for their girl and loved how sassy and strong-willed Katya was. Such a fantastic read! Can't wait for more!!

[Daria · Rating 5 out of 5]

The beginning was a tad slow but I get creating drama and depth of story.
Why choose if you dont have to?
Two sides of different coins sort of. When the bad is worse.
4 and 1 mission. Brothers dangerous. Girl just as dangerous. A helping hand more than a time or two when things get sketchy.
Distinct personalities the same need. Heat next level. Drama and danger on point! Well deserved stars.

I received a free copy of this book and am voluntarily leaving a review.

[Shelley G · Rating 3 out of 5]

This was very confusing with the timeline jumps to keep track of where things were happening. And events happened then later in book was like happening for the first time which made no sense. This was supposed to be a continuation of ours Kara’s story but was an entirely new story with another poly group leaving Kara’s story unfinished and readers hanging.
The author continues to call anal grape situations that aren’t even physically realistic medically rough intense scenes which I find abhorrent. There is a difference between intense and straight up grape. She writes reactions the women have in these situations that are not realistic, rational or possible as written having them resist at first then magically love everything happening to them minutes later which is the stupidest thing u could write. As written these scenes would cause extreme pain, actual physical injuries and long term after effects if really happened so it’s being written to shock the reader or cause extreme fantasy reactions instead of an honest enjoyable story experience. It’s disappointing that the author keeps crossing that line where the women’s consent is taken away, she is forced to experience these situations then it is portrayed as a great experience leading her to just love all three men esp the ones doing it to her. It degrades the women and makes them appear weak, foolish, no strength to stand up for themselves, fight back and insist on proper treatment, just willing to be sexual doormats yet they are strong, fierce, deadly in every other aspect of their personalities. Makes no sense.
Now these three men did treat Katya way better than the men in ours treated Kara. They did acknowledge her strengths and abilities and weren’t nearly as over powering, rigid and dominating as the other trio. So I did enjoy most of this story better than the first.
However it didn’t conclude really well because it skipped everything that happened to Kara and her men after the pool incident leaving the reader to feel like we missed a book in the middle needed to tie everything together.
This should have been a separate off shoot of the first book with the first completed more thoroughly in itself to make more sense.
If not for the anal scenes written as they were portrayed this would have been a fabulous book.

I received a free copy of this book and am voluntarily leaving a review.

[The Book Ssirren · Rating 5 out of 5]

Oh holy hotness! This was one heck of spicy, intense, and chaotic story. It was off the charts. Katya was a firecracker in every sense of the word. She was fierce, strong, sassy, and ruthless. I loved her why chose, just keep all. This story has action and really pulls you in. I was so engrossed in this, I didn’t want it to end. Phew! It was hot.

[Michelle · Rating 4 out of 5]

Theirs is book two of The Bratva Kings Duet and is Katya and the Dragunov brothers, Andrei, Mikhail, and Viktor's dark reverse harem romance. This is a steamy page turner with danger, suspense, unexpected twists, and a great storyline that held my attention from the first page until the last. I voluntarily reviewed a copy of this book.

[Christina Standridge · Rating 5 out of 5]

I love the story. I love Katya. She is ballsy, sassy, dangerous and intelligent. MIkhail, Viktor, and Andrei are possessive, alpha and hardcore. I love their story. Some action, suspense and victory.

I received a free copy of this book and am voluntarily leaving a review.

[Holli Cadwell · Rating 5 out of 5]

Awesome read

I absolutely loved the 2 books " ours" and " theirs ". The girls were fabulously talented and deserved the love and devotion they each received in their extra special relationships.

[Jenn H · Rating 3 out of 5]

This was an interesting read but I was expecting it to continue where book 1 ended off with Kara and with names very similar to the heroine I did feel a but confused at first.

I received a free copy of this book and am voluntarily leaving a review.

[Sam Allen · Rating 5 out of 5]

Loved it

Second book in the series and it didn’t disappoint. Absolutely cracking, super steamy and I love the characters.

I received a free copy of this book and am voluntarily leaving a review.

[Terry · Rating 4 out of 5]

Badassery

Lots of inspired escapes. I am a fan of Bratva tales. I am NOT a fan of the character, Andrei, and his ilk. It is not sexy to hurt women…ever.

[Gaynor Jones · Rating 5 out of 5]

❤️🔥❤️🔥

An intense reverse harem story filled with heat, lust, secrets, danger, choices, and wonderful intense and interesting characters. Great series.

[bunny · Rating 3 out of 5]

The timeline in this book is more tangled than a basket of yarn after a kitten attack. We spend half the time jumping between "two weeks ago" and the "present" like a caffeinated kangaroo, which is mostly just an excuse to front-load the smut before getting to the actual plot. Katya is supposed to be this elite Revenant agent, yet she spends an impressive amount of time being pinned to walls by three brothers who clearly don't understand the concept of a professional boundary. Mikhail is the cold one, Viktor is the "sarcastic" one who mostly just smirks, and Andrei is the observant one who somehow ends up being the most tolerable. The rescue mission with the drones and the Markov crew adds some much-needed adrenaline, but the "happily ever after" feels a bit rushed considering they were all trying to out-maneuver or abduct each other five minutes prior. If you can ignore the whiplash from the constant time-skipping, it’s a decent enough conclusion to the duet with enough steam to fog up a skyscraper.

[Narelle · Rating 5 out of 5]

Soon she'll be theirs. Katarina/Katya is attracted to all three Dragunov brothers (Mikhail, Viktor and Andrei), and they to her, in this dark read with danger, action, why choose steam and more.

I received a free copy of this book and am voluntarily leaving a review.

[Athena Diven · Rating 5 out of 5]

Wow! So hot! And yet, it satisfies my need for a brutal action adventure drama! I have to admit, the timeline shifts were a little confusing at first, but I get it, they added to the overall essence of the storyline as well as the developing relationships between Katya and Victor, Andrei and Mikhail. It's fast paced, cling to your seat explosive action oriented, where they find time to kill for flames with Katya. I couldn't put it down.

I received a free copy of this book and am voluntarily leaving a review.

[Amy · Rating 3 out of 5]

This book was okay. The plot for the duet was interesting. The MMC's were very repetitive personality-wise from the first book. The spicy scenes were steamy, but again, very repetitve from descriptions to the language from the first book. I don't think either book was long enough to really develop the relationships.

The first book was better because it was all fresh. This was not a bad book, just not my favorite.

[Christina Standridge · Rating 5 out of 5]

I love the story. I love Katya. She is ballsy, sassy, dangerous and intelligent. MIkhail, Viktor, and Andrei are possessive, alpha and hardcore. I love their story. Some action, suspense and victory.

I received a free copy of this book and am voluntarily leaving a review.