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Debt of the Mafia Underboss: A Grumpy Sunshine Spicy Age Gap Mafia Romance

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144 pages, Kindle Edition

Published May 7, 2026

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Rica Lane

46 books76 followers

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Displaying 1 - 30 of 82 reviews
Profile Image for Curvy Girl Book Nerd   (Jen S).
5,395 reviews72 followers
July 22, 2026
DEBT OF THE MAFIA UNDERBOSS is Book 2 of The Costa Vendetta series. It's a short and steamy, instalove, OTT, age-gap, opposites-attract, grumpy-sunshine, forced-proximity, curvy teacher gets her mafia man romance. Matteo Costa is the 44-year-old hunky, grumpy, ruthless silver-fox mafia underboss-enforcer for the Costas. Clara is a 26-year-old sassy, fierce, curvy teacher who was sold by her father for his debts. Matteo bought the debt to gain shipping logs to bring down their enemy, but he also fell in love with Clara immediately and knew he needed to keep her safe. These Costa men love hard and fierce. Matteo was ruthless and possessive, but also a big teddy bear baker for his woman. Can he keep her safe? The chemistry between these two was explosive. I loved Clara's sass, and the ending was so happy after the drama. The war with the Bellantis is ramping up though for a full on mafia blood bath.
Profile Image for Tracy Kemp.
223 reviews6 followers
Review of advance copy received from Author
May 4, 2026
Clara’s life doesn’t just change—it’s violently upended, the ground beneath her ripped away with no warning and no chance to prepare. One day she’s living a life defined by routine and purpose, shaping young minds, worrying about lesson plans and playground squabbles. There’s a kind of warmth and predictability in that world, even in its chaos. And then, in the span of a single moment, it’s all gone—replaced by something cold, unfamiliar, and deeply unsettling. Being handed over to settle a debt she never incurred strips away not just her freedom, but her sense of control, forcing her into a reality where power is currency and trust is a liability.
What makes that transition so gripping is how stark the contrast feels. Clara doesn’t belong in this world—and yet, she’s forced to navigate it anyway. The fear is there, simmering beneath the surface, but it never fully consumes her. Instead, there’s this quiet, steady determination that begins to take root almost immediately. She may be out of her depth, but she refuses to drown.
And then there’s Matteo Costa.
From the outside, he’s exactly what you’d expect—a man built on reputation, someone whose name alone likely carries weight in rooms Clara never even knew existed. He’s controlled to the point of precision, every move calculated, every word measured. There’s a sense that very little escapes him, that he’s always three steps ahead, always aware. It would be easy for him to feel one-dimensional in that role—the cold, untouchable figure at the top—but the story refuses to leave him there.
Because Matteo isn’t just power and intimidation. There are cracks in that exterior, glimpses of something quieter and far more human. The image of him in a kitchen, sleeves rolled up, hands dusted in flour as he bakes bread, is such a striking contradiction to everything he represents. It’s not played for novelty—it feels instinctive, almost necessary, like this is the part of himself he doesn’t show the world. It adds depth in a way that makes him feel real rather than archetypal. He’s not softened by it—if anything, it makes his harsher edges feel sharper by comparison.
That duality is what makes his dynamic with Clara so compelling. She sees both sides, sometimes before he even realizes he’s showing them. And instead of shrinking away from his darker nature, she meets it head-on, balancing it with her own steady presence.
Clara’s strength is one of the most satisfying aspects of the story because it’s not loud or overdone—it builds. At first, she’s simply trying to survive, to understand the rules of a game she never agreed to play. But slowly, she begins to adapt, to observe, to learn. There’s an intelligence to her, an emotional awareness that allows her to read situations—and people—more clearly than anyone expects. She doesn’t try to outmatch Matteo in his own world; instead, she stands firm in who she is, and that becomes her power.
There’s even a subtle irony in how her past life prepares her for this one. Managing a classroom full of unpredictable children requires patience, quick thinking, and the ability to command attention without force—all skills that translate surprisingly well when dealing with volatile personalities and high-stakes situations. It adds a layer of authenticity to her growth that makes her evolution feel earned rather than convenient.
The relationship between Clara and Matteo thrives in that tension between light and dark. The grumpy/sunshine dynamic isn’t just a trope here—it actively shapes their interactions. Clara doesn’t just bring warmth; she challenges him, disrupts the rigid structure he’s built around himself. She forces him to feel, to react, to step outside the carefully controlled version of himself he presents to the world.
And Matteo’s shift is where the emotional weight really lands.
At first, Clara is a responsibility, a transaction—something to be managed. But that perception doesn’t hold for long. There’s a gradual shift in the way he looks at her, the way he listens, the way he begins to anticipate her needs before she voices them. His protectiveness isn’t immediate—it grows, deepens, until it becomes something absolute. When he finally crosses that line from obligation to genuine attachment, it’s not subtle. It’s intense, consuming, and entirely uncompromising.
That’s what makes moments like him erasing her debt so powerful. It’s not done for leverage or control—it’s done because he wants to free her, even if that means risking the only tie that binds her to him. There’s something incredibly telling in that choice. It shifts the entire foundation of their relationship, transforming it from something transactional into something deeply personal. It’s quiet, almost understated, but it carries more weight than any dramatic declaration could.
The pacing of the story keeps everything moving without losing that emotional depth. There’s always a sense of momentum—of things building, shifting, escalating—but it never feels rushed. The balance between action, tension, and intimacy is handled in a way that keeps you engaged without overwhelming the core relationship.
And at its heart, that’s what this story delivers: a romance that feels intense without losing its emotional grounding. There’s undeniable chemistry, yes, and a strong current of danger running through every interaction, but there’s also vulnerability, growth, and a genuine connection that develops beneath it all.
For readers who gravitate toward mafia romances that blend grit with softness, power with vulnerability, this story offers a deeply satisfying experience. It leans into familiar tropes but gives them enough nuance to feel fresh, creating a dynamic that’s both addictive and emotionally resonant.
In the end, it’s not just about danger or passion—it’s about transformation. About two people from completely different worlds finding something real in the middle of chaos. And about the kind of love that doesn’t just protect—but changes you.
Profile Image for Michelle Frater.
2,203 reviews22 followers
May 7, 2026
What caught me most off guard about this book wasn’t the connection between the two main protagonists, but how quickly Clara adapted to a life she never could have imagined. In less than twenty-four hours, Clara goes from being a third-grade teacher living an ordinary life to being ripped from everything she knows and handed over to one of the most dangerous men in the city as collateral for her father’s debt. Yet somehow, she doesn’t break, and even ultimately thrives. To say Matteo Costa is intimidating would be an understatement on the scale of calling the Shard just another tall building. With his pitch-black eyes, brutal build, and that unnerving predatory stillness, Matteo is the kind of man who commands a room without saying a word. But the moment Clara stood in his penthouse gripping a baseball bat and threatening to shatter his kneecap? That was when I knew this wasn’t going to be your typical captive romance. One of my favorite things about Clara was that, despite her fear, she never folded. She pushed back. She challenged Matteo and refused to become small just because he was larger than life. And Matteo? I was obsessed with the contrast in his character. On one side, you have the cold, ruthless mafia underboss who inspires fear wherever he goes. On the other, the man quietly kneading bread in the middle of the night, using flour and dough to quiet the demons in his head. That duality made him infinitely more compelling. What really got me, though, was the effect Clara had on him. From the moment she entered his world, she became his silence in the chaos—his anchor, his one place to breathe. His salvation. Watching someone as dangerous and emotionally barricaded as Matteo unravel, was easily one of the strongest parts of the story. The fact that he ultimately gave her the choice to stay or leave, unable to truly cage the one thing that brought him peace, said everything about how deeply he’d fallen (though I suspect he never would have let her go). That said, this was also where the story pushed believability a little. Clara’s emotional adjustment happens fast. We’re talking kidnap victim to passionately tangled up with her captor on the kitchen counter in less than a day. And while I loved that she was fearless and slipped into Matteo’s world with surprising ease, some of her reactions, especially to the violence surrounding him, felt almost too accepting. When your captor casually disappears to eliminate half a dozen enemies and your response is basically “okay,” it does make you pause. Still, Matteo’s possessive, protective energy absolutely worked for me. He radiated pure “touch her and die” intensity, but what made it land was the reverence underneath it. The way he admired Clara’s sass, encouraged her fire, and never tried to dull what made her who she was. That hit on some deeply primal level. And the banter? Easily one of the highlights. Clara comparing Matteo’s mafia operation to managing a classroom full of third graders was hilarious... and honestly, not entirely inaccurate. “I am a third-grade teacher. Insanity is a prerequisite for the job.” Overall, this was another addictive, fast-paced read packed with danger, tension, emotional intensity, and plenty of spice. Not flawless, but undeniably entertaining and once I started, I didn’t want to put it down.
I received a free copy of this book and am voluntarily leaving a review.
3,456 reviews
May 6, 2026
A simply unstoppable read, from moment I picked it up to the very finish it was totally captivating
Clara is a simple third grade teacher that lives in a crumbling one room apartment, she spends her nights grading spelling tests and reading stories by her class who she absolutely adores and she knows that this was never a career she was going to get rich in but she would not change teaching young minds it is very rewarding.
The suddenly her world is thrown in to turmoil as she leaves her classroom she is accosted by two giants that wordlessly put her into a car and drive her to a building she has never seen or been in before, the men refuse to answer any of her questions and yet she has that spidery feeling that tells her that Arthur Reeves has something to do with it.
Matteo Costa had known the moment that his men brought Clara to his apartment that she was his woman, it was the first time in over twenty years his mind had quieted and this has to be a miracle and he knows that his buying the contract had been more than the right thing to do, it had been fate and he also knew that there was no way he would ever allow her to leave and be put in such danger again, for as long as he drew breath.
He has to explain to the horrified teacher what her Lying, cheating, thieving father had done, that he had stolen information from the Bellanti family after he had renegued on a million-dollar outstanding debt and had then run to the Costa Mafia where he tried to make a bargain with the family. He wanted his debt with the Bellanti family cleared, as a sweeten he would also throw in his daughter who should be worth something to them.
At this point and especially after seeing the beautiful and incredibly innocent Clara he realised that she had no idea what her father had done, he swore that before the day was over, he would ensure that Arthur would never ever see or speak with her ever again! In fact, if he continued to breathe for more than another day he would be able to consider himself incredibly fortunate.
Clara like everyone that had lived in Chicago knew all about the story and what the Bellanti family had done over twenty years ago to the Costa brothers, the way that Matteo had arrived in a alley after an anonymous tip off finding his beloved father dead, his lifeblood being washed away and since that day the families had been at war and it seemed now that the information Arthur had stolen had painted a target on her back and they were determined rhey were going to kill her as quickly and as publicly as possible.
The instant attraction between both Matteo and Clara is a heartwarming read and the way that he shows her to bake bread in his huge kitchen and she tells him stories of her children seems to quieten his mind for the first time in over twenty years.
I thoroughly enjoyed the book and look forward to reading any future publications; keep up all the wonderful writing.

I received a free copy of this book and am voluntarily leaving a review.
Profile Image for Chandra Luna.
2,778 reviews17 followers
Review of advance copy received from Author
May 1, 2026
There’s something wildly addictive about a story that takes a dark premise and softens it with unexpected warmth—and Debt of the Mafia Underboss by Rica Lane absolutely nails that balance.

Clara’s world flips upside down in the worst way imaginable—sold off to settle a debt she never owed. One moment she’s managing a classroom full of third-graders, the next she’s staring down a man who should be terrifying… and somehow isn’t. Or at least, not in the way she expected.

Matteo Costa is everything his reputation promises—ruthless, powerful, and completely in control. But then there’s this unexpected, almost disarming layer to him. A man who commands fear by day and quietly bakes bread at night? It shouldn’t work—but it really does. That contrast gives his character a depth that makes every interaction with Clara feel charged in a completely different way.

And Clara? She’s not fragile or helpless. If anything, she meets Matteo’s intensity with a strength of her own—sharp, adaptable, and just a little bit fearless. There’s something so satisfying about watching her step into this dangerous world and not just survive… but find her footing in it. Honestly, after wrangling a room full of third-graders, mafia chaos doesn’t stand a chance.

The romance leans into that irresistible grumpy/sunshine dynamic, with a heavy dose of “touch her and regret it” energy. Matteo might start off seeing Clara as a debt to collect, but it doesn’t take long before his focus shifts completely. The moment he chooses her—really chooses her—it’s intense, protective, and just the right amount of over-the-top.

One of the standout moments? The way he completely erases her debt without hesitation. No strings. No games. Just a quiet, powerful declaration of where she stands with him. It’s the kind of swoon-worthy moment that sticks.

This is a fast-paced, high-heat read that doesn’t get bogged down in unnecessary drama. It delivers exactly what it promises: obsession, danger, devotion, and a romance that burns hot but still leaves room for heart.

If you love mafia romance with a protective alpha who secretly has a soft center (and maybe a flour-dusted apron), paired with a strong, sunshine-bright woman who refuses to be overshadowed—this one is absolutely worth diving into.

A quick, steamy, cinnamon-roll-meets-underboss story that proves sometimes the most dangerous men are the ones who love the hardest.

I received a free copy of this book and am voluntarily leaving a review.
Profile Image for Virginia.
664 reviews4 followers
Review of advance copy
May 6, 2026
Debt Of The Mafia Underboss by Rica Lane is the second title in the new Costa Vendetta series and it was a great read.
As a steamy age gap, forced proximity, grumpy/sunshine, OTT alpha, mafia suspense romance, the plot, storyline and main characters had me hooked right from the start.
Matteo Costa is the underboss of the Costa syndicate and has been haunted by the murder of his father for twenty years. He is ruthless and violent but to quiet the demons in his mind he stress bakes bread in the middle of the night. When the opportunity arises to acquire important intel on the enemy Bellanti family via a man in crippled by gambling debt, he doesn't hesitate especially when the man also offers his only daughter as collateral. A daughter, by photo alone, captivates Matteo immediately.
Clara, younger and a third grade teacher is independent, intelligent, fierce, sassy and not afraid to take a stand when she finds herself locked in a penthouse with the lethal yet devastatingly handsome Matteo.
The push-pull dynamic between Matteo and Clara is there right from the start and Matteo doesn't fight the primal and possessive reaction to claim and protect her. Clara struggles internally, brain versus desire, and their sizzling chemistry ignites. The forced proximity, the ever present circling danger from the Bellantis and the growing mutual understanding, respect and love between Matteo and Clara was a pleasure to read in addition to the scorching steam and spice which easily kept me turning the pages right through to the very end.

I received a free copy of this book and am voluntarily leaving a review.
Profile Image for Carolee.
681 reviews11 followers
Review of advance copy received from Author
May 5, 2026
“Debt of the Mafia Underboss” by Rica Lane is a thrilling addition to the Costa Vendetta series, blending suspense, romance, and unforgettable characters. The story plunges readers into Clara’s world, a compassionate third-grade teacher whose life is turned upside down when her father’s betrayal lands her in the hands of Matteo Costa, the enigmatic mafia underboss. Lane masterfully builds tension from the very start, with Clara’s fiery spirit shining through even as she faces danger. Matteo, equally compelling, reveals surprising tenderness beneath his tough exterior, especially in his nightly ritual as a midnight baker. The dynamic between Clara and Matteo is electric, making every interaction pulse with emotion and intrigue.

This novel stands out for its unique blend of high-stakes mafia drama and spicy romance. The age gap, forced proximity, and Clara’s curvy sunshine persona create delightful chemistry, while Matteo’s protective nature adds depth and heart to their relationship. Lane delivers a fast-paced, captivating read where devotion and obsession are front and center. Fans of steamy romances with strong heroines and complex heroes will find “Debt of the Mafia Underboss” an absolute page-turner. It’s a testament to Lane’s talent that this story leaves readers eagerly anticipating the next installment in the Costa Vendetta series.

I received a free copy of this book and am voluntarily leaving a review.
Profile Image for Barbara Atkinson.
1,190 reviews7 followers
May 4, 2026
What an explosive read. The Costa’s are certainly possessive of the women they claim and Matteo is no different.
Matteo is the underboss of the Chicago syndicate. He is ruthless, and his battles usually end in a blood bath. When a low
Life gambler tries to sell his gambling debt in exchange for the rival families shipping logs he also offered his daughter as collateral. He is haunted by demons of his past and before her the only thing that stoped the war room in his head was baking.
Clara is a third grade elementary school teacher. She is fierce, sassy and a spit fire. Her father sold her to a mafia syndicate to save his own skin. She refuses to let her fathers betrayal effect who she is
I love Clara. She brings a Louisville Slugger to a gun fight. She is stubborn, independent and sees the man underneath the mask. I love that she gets a choice and her choice is Matteo.
Matteo is dominating, obsessed and completely enamored with Clara. She has been the only thing other than baking that silences his demons.
This is a fantastic series so far. Matteo’s story is the second in the series and I was sad when the book ended. I wanted more. This one is full of danger and betrayal, it will keep you on the edge of your seat. I can’t wait for Dante’s story next.

I received a free copy of this book and am voluntarily leaving a review.
Profile Image for Emily.
3 reviews
May 12, 2026
Spicy, Sweet, and Impossible to Put Down: A Review of Debt of the Mafia Underboss by Rica Lane

Rica Lane releases book 2 in the Costa Vendetta series, Debt of the Mafia Underboss, a short, spicy, and sweet romance about a third-grade teacher who is sold to mafia underboss Matteo Costa by her debt-ridden father, turning her into a bargaining chip in a deadly criminal world. Though Matteo is feared as a ruthless killer, she soon discovers his softer side through his secret passion for midnight baking, which slowly draws her toward him. As enemies close in and a hit squad hunts her down, Matteo becomes her fierce protector despite claiming her as a debt to collect. This standalone mafia romance blends forced proximity, age-gap tension, and obsessive devotion with a grumpy yet protective hero and a sunshine heroine.

This is the first book by Rica that I’ve read, and I can confidently say she’s become one of my new favourite authors. I’m so glad she writes long series because one book is definitely not enough to satisfy the addiction Rica has created.

Overall, I’m officially a new fan of Rica’s work, would highly recommend this book, and can’t wait to see what else she has to offer.

Thanks, Rica, for making my TBR even longer! 😂.

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

3,548 reviews26 followers
May 8, 2026
⭐️⭐️⭐️⭐️⭐️ Debt of the Mafia Underboss by Debt of the Mafia Underboss — Rica Lane 🍞🔥🖤

This book had me hooked from the very first chapter! Matteo is the perfect grumpy mafia underboss—dangerous, protective, ruthless to everyone except Sienna. I absolutely loved the contrast between his deadly mafia life and his quiet obsession with baking bread in the middle of the night. 🥖❤️ It gave his character so much depth and made him impossible not to love.

Sienna was such a fun sunshine heroine. Even after being betrayed by her father and thrown into a terrifying situation, she still had strength, sass, and heart. Their chemistry was intense from the start, and the forced proximity tension was SO good. 🔥

The “debt to devotion” trope was done perfectly. Matteo may have claimed her as payment, but it quickly became obvious he would burn the world down to keep her safe. The protective moments, possessiveness, and emotional vulnerability underneath his gruff exterior made this impossible to put down.

Fast-paced, spicy, emotional, and addictive with great mafia danger and romance mixed together. Rica Lane delivered another binge-worthy Costa family story! 💣🖤📚.

I received a free copy of this book and am voluntarily leaving a review.
15 reviews
May 9, 2026
I went into this expecting a dark “MMC buys a woman” storyline, but that’s really not what this is at all. So if the word bought has you hesitating, don’t let it scare you off. The MMC doesn’t come across as someone purchasing women, and the dynamic between them develops into something far more entertaining, emotional, and addictive.

And honestly… a bad boy who smells like a bakery? Impossible to resist.

The MMC is completely OOT, possessive, intense, and absolutely gone for Clara, while the FMC is brave, sassy, and refuses to back down from him. Their banter was one of my favorite parts of the book, especially this gem:

“You complain too much, Clara.”
“You bought me. You have to deal with the customer service issues.”

The size difference adds to the chemistry without overshadowing the story, and I loved that Clara never felt weak despite how intimidating the MMC could be. She pushes back, stands her ground, and slowly becomes the person who helps heal parts of him he thought were beyond saving.

Possessive bad boy, emotional tension, humor, and a heroine with attitude? This one delivered.

I received a free copy of this book and am voluntarily leaving a review.
1,215 reviews
May 8, 2026
Clara Reeves finds herself being kidnapped by two huge dangerous men and pushed into the penthouse above the Il Corvo Restaurant. She’s alone in-the apartment and doesn’t know why she’s been taken. She did bring her Louie Ville slugger bat with her. The guards just smiled at her when they saw it. Soon the penthouse elevator dings and in walks another very large man with silver in his hair and he just stares at her. When she tries to hit his knee caps, he quickly subdues the bat and her. Clara discovers that her father owed a gambling debt to the Costas in the mount of a Million dollars. He sold her as collateral for his debt and gave a thumb drive with shipping details of the Bellenti’s. The war is getting started when they try to breach the restaurant and Matteo’s penthouse for the data her father told and for Clara . It’s a fortress. Matteo has laid claim the Clara and will protect her at all costs. Good story and interesting characters.

I received a free copy of this book and am voluntarily leaving a review.
Profile Image for Dee.
244 reviews3 followers
May 11, 2026
I received a free copy of this book and am voluntarily leaving a review.
Unfortunately, this story wasn't for me.

There were a lot of repetitive statements and descriptors that, once I took notice, I couldn't stop noticing. Some examples include how he smells like toasted flour and rum; his size (brutally heavy, sheer size of him, etc.); his "heavy gold chain," which is apparently a core feature of his; the obsession with the ink on his left shoulder, which is always flexing for some reason; the FMC and her grading tests; the scratching / scraping of his coarse beard; as well as someone always leaning on the black marble counter.

There were a few inconsistencies, which I noticed as well.
A weird point for me was that the FMC kept measuring the seriousness of her current experiences as a 3rd-grade teacher. I understand that it is a grueling job, but watching murders, being sold, having your house blown up, etc. makes it quite a wild association.

No hate to this author at all.
The style of writing, characters, and story were just, unfortunately, not for me.
Profile Image for Dru.
27 reviews2 followers
May 19, 2026
Clara’s life changes overnight when her father sells her to the Costa family to pay off his debts. Suddenly trapped in a luxurious penthouse, she finds herself under the control of Matteo, a feared mafia underboss with an unexpected softer side as a baker. While danger closes in from outside threats, their connection begins to grow in complicated ways.

This book had an interesting premise, but overall it felt more average than memorable. The idea of a dangerous mafia figure with a softer hobby was fun, and there were moments where the characters worked well together. However, the writing became quite repetitive, with certain descriptions and details mentioned so often that it started to pull me out of the story. I also found some of the character reactions and comparisons a bit strange, which made it harder to fully connect with the emotional side. The pacing itself is decent and the story is easy to follow, but it lacks depth in key moments. It is not a bad read, just not one that really stands out. For me, it sits around a three star experience.
Profile Image for Joy Parsons.
478 reviews6 followers
June 10, 2026
What an absolutely gripping continuation of the Costa Vendetta series! I thoroughly enjoyed how this installment deepened the overarching narrative, seamlessly building upon the foundation established in the first book while raising the stakes in ways that felt both organic and intense. The character development throughout this story was truly fantastic; watching the protagonists grow individually and collectively made their eventual arcs feel incredibly earned and satisfying to witness.

Rica Lane has truly hit her stride with this series, mastering the grumpy-sunshine trope to create a dynamic that is as electrifying as it is heart-wrenching. The chemistry between the leads was palpable, fueled by high-tension, spicy interactions that kept me glued to every page. The pacing was impeccable, maintaining a perfect balance between the darker elements of the mafia world and the emotional intimacy of the romance. This book hits all the right notes for the genre, resulting in a highly addictive read that left me thoroughly impressed and eager for more.
573 reviews12 followers
Review of advance copy received from Author
April 30, 2026
I have enjoyed all of Rica Lane's books, about MC or Mafia... and this book didn't disappoint. It's a bit on the shorter side, but that's not a bad thing either! This is Book 2 of the Costa Vendetta series, as interconnected standalones.

Matteo being a "secret" midnight baker is such a fun thing & adds a lighthearted twist to the book!! I also love how he just paid off her "debt" ($1.2 million!!) & just burned up the contract!! *swoon*

Clara adjusts well & quickly learns to thrive in her new life... which is a LOT different than her previous life as a teacher!

I enjoyed their story & look forward to the rest of the series!!

Spice level: 🌶️🌶️🌶️

*mafia romance
*grumpy/sunshine
*age gap
*she's sold to pay off her father's debt
*forced proximity
*alpha, OTT possessive MMC
*romantic suspense

Thank you to the author (Rica Lane), publisher & Booksprout for the ARC. All opinions are my own.
6,749 reviews27 followers
May 6, 2026
Second book in this fun series where we finally get the Costa story. Debt of the Mafia Underboss is a high-octane addition to the Costa Vendetta series that I couldn’t put down. Matteo Costa is the perfect "OTT" alpha—ruthless and lethal, yet surprisingly human with his midnight stress-baking habit.

When he takes Clara, a feisty third-grade teacher, as collateral for her father’s gambling debts, the chemistry is instant and electric. I loved that Clara wasn't a damsel in distress; her sass and independence made the "forced proximity" dynamic so much more engaging. The push-pull between Matteo’s possessive instincts and Clara’s internal struggle between logic and desire kept the tension sky-high.

With plenty of scorching steam, a fast-paced plot involving the rival Bellanti family, and a protective hero you can’t help but root for, this is a must-read for fans of age-gap mafia romance. Highly recommended!
Profile Image for Praline 99.
1,524 reviews8 followers
May 15, 2026
Mafia romance.
Clara is a young schoolteacher living a quiet life, but everything changes when her father sells her to a mafia underboss, a man everyone fears. But the man who comes to get her is a mafia man by day and a prodigious baker by night.
Matteo is the dangerous mafia underboss. A few days ago, a man traded his daughter for freedom. He didn't think he'd accept until he saw her, and it was love at first sight. He knows he'll do anything to protect her from the men who are after her and her father.
Will Clara and Matteo have a beautiful love story, or will the danger surrounding Clara and Matteo's world get the better of them…

I love a young woman in danger, sold by her father, and a dark hero who's part of the mafia but has a tender heart nothing like it for a book that will melt your heart! 🫠♥️.

I received a free copy of this book and am voluntarily leaving a review.
Profile Image for Diana Page.
1,324 reviews7 followers
Review of advance copy
May 5, 2026
Clara and Mateo’s story is book 2 of the Costa Vendetta series and it’s a good one, a few timeline moments, but nothing that detracts from the overall storytelling or its enjoyment. She’s a teacher sold to pay her father’s gambling debts, he’s a Costa who’s been fighting to stay alive and win a 20 year old war with a rival family. Between them they need to build trust and fast. Rica Lane is slowly giving us the picture of a mafia family that hits the morally grey areas of life, but truly comes down to “family is everything, and we need to do everything to avenge our parents deaths and keep Chicago in our hands so the Bellanti family doesn’t overwhelm it and cause the streets to run red with innocent blood.” I love this family and can’t wait to read more of the books. 4✨’s.

I received a free copy of this book and am voluntarily leaving a review.
Profile Image for Sandra.
1,198 reviews8 followers
Review of advance copy received from Author
May 6, 2026
When Matteo buys the debt, yes, it's for the ledger that will hopefully help them win the war, but the sweetener is Clara. He knows that she is a dead woman walking because of her father, and he'll not have that on his conscience, especially when he knows that she is his. It only takes one look to know that this Costa has found his woman.

Clara will not go down without a fight; she can't believe what her father has done. But instead of hating her captor, she finds that he has a draw on her, one that has her intrigued because he is more than just the Underboss of the Costa family.

This is a hot and steamy, action-packed novella, and another good read in the series.

I received a free copy of this book and am voluntarily leaving a review.
Profile Image for Jenia Tortora.
1,713 reviews3 followers
May 7, 2026
Matteo has kidnapped an elementary teacher as part of a bargain. Clara's father is not a good man and attempted to clear his gambling debts by double crossing the Bellantis and selling their secrets and his daughter to the Costas to clear his gambling debt. Clara is angry and justifiably so but Matteo could not walk away from her once he saw her. The caveman in him claimed her and then set out to secure and keep her. Its a wild forced proximity ride with a defiant school teacher and a bread baking mafia underboss that works. He loves her fire and she falls for him despite their beginnings. Loved this book!! The more I learn about this family the more I crave the next book in the series.

I received a free copy of this book and am voluntarily leaving a review.
81 reviews
May 13, 2026
Debt Of The Mafia Underboss is the 2nd book in the Costa Vendetta series. Clara is a third grade teacher. Not someone you expect to be grabbed from their home to settle a debt. This is all her crooked father's fault. He's put his daughter up as collateral for his debts, AND double crossed TWO Mafia families! Matteo is the Costa Family underboss. He's not someone you want to cross, or try to hit with a bat, but Clara does. Matteo is pretty much instantly enamored with Clara. It does take her a bit longer to fall in the circumstances. The fact that he bakes helps. I'm enjoying this series and look forward to the next addition.

I received a free copy of this book and am voluntarily leaving a review.
1,057 reviews3 followers
May 13, 2026
His by MeemsAngel82

This was a new author for me and I loved the connection between these two leads. The writing is solid and the world is full despite the shorter story. I got enough background to enjoy them both and felt that chemistry between them.

She was his from the start.

Though she was an innocent and had nothing to do with the very bad choices her father had made, he took her. He did it for his own interests and once he saw her image, he knew she had to be his. The two meeting for the very first time was enough to solidify the connection they had. She didn't back down and he didn't either. This was entertaining and I can hardly wait for more!

I received a free copy of this book and am voluntarily leaving a review.
3,679 reviews
May 24, 2026
Matteo, is the underboss of The Syndicate. Who knew that bread smelled so good? He will protect his asset. His collateral. How long would that last she has not nice father who traded her for a million dollar debt and as a bargaining chip. Matteo is found methodically needing the dough in order to make a sourdough. But he smells like fresh blistered forcaccia bread. The two do not relate of his size and stealth like grace. Clara is his. Clara is feisty, sassy and ready to verbally and physically banter and fight Mateo in order to stand her ground. He admires her for not backing down and that what makes this a very good book.

I received a free copy of this book and am voluntarily leaving a review.
15 reviews1 follower
May 27, 2026
Debt of the Mafia Underboss by Rica Lane is a dark, addictive romance packed with tension, passion, and all the grumpy/sunshine goodness. The mafia underboss is broody, powerful, and fiercely protective, while the sunshine heroine brings warmth and light that slowly chips away at his guarded exterior. The age-gap dynamic adds another layer of tension, making their connection even more compelling. Their chemistry is intense, filled with sparks, emotional moments, and a powerful push-and-pull that keeps you hooked. With danger, heart, and plenty of drama, this is a fast-paced read perfect for fans of mafia romance with a softer side beneath the darkness.

I received a free copy of this book and am voluntarily leaving a review.
Profile Image for Eve.
520 reviews7 followers
June 7, 2026
Matteo has been planning, plotting and developing revenge for twenty years to avenge his family. He is a lethal killer who is haunted by the brutal murder of his father and to quiet his chaotic mind he finds peace in baking.
Clara is a Third Grade Teacher, her father Arthur is a degenerate gambler who just sold her to pay his debt. Matteo pays the debt, takes the ledgers Arthur has and Clara as collateral.
One look is all it took for Matteo to know Clara is his. He protects her from all whom seek to harm her and his family.
Book is intense, raw, emotional and exceptionally powerful.
Matteo is complex, intelligent, ruthless and utterly obsessed with Clara. His heavy gold chain adds to his charm.

I received a free copy of this book and am voluntarily leaving a review.
This entire review has been hidden because of spoilers.
694 reviews4 followers
July 31, 2026
Did not finish

The book had potential it started out with a good story. I liked how the author just dove into the story instead of being over wordy. However this book is just too simplistic and predictable. It could definitely use some editing to remove repeats. The MF is a teacher but very naive and slow to understand the situation she's in. Yet she has no problem letting the MC grow her just a few hours after they met. I know it's a insta love but I think it would have improved the story if they'd had a couple of days to build a little angst towards the relationship. These kind of books just don't hold my interest. Someone else might enjoy it but it was just too bland for me.
Profile Image for Melissa Wilson.
1,610 reviews9 followers
Review of advance copy received from Author
May 1, 2026
This is the second book in Costa Vendetta series. Tropes: Mafia, age gap, sold to the Mafia, forced proximity, and school teacher. Clara's father sold her to the Costa Mafia to settle a debt. Clara a third grade teacher is just trying to live her life when she is taken by Matteo Costa. Matteo may be a silent killer with trauma but he knows Clara is his to protect. I liked Clara and Matteo. They might be complete opposites but they understand each other. I enjoy the drama with the rival Mafia while the series continues.

I received a free copy of this book and am voluntarily leaving a review.
1,017 reviews6 followers
Review of advance copy received from Author
May 2, 2026
Matteo paid Clara's father for the information he had stolen from their enemies and with that information he had thrown Clara in the mix as well. Matteo took it over to save Clara. There is something about this woman that calls to him. Who can't help but melt when you see this big scary alpha man who can bake better than anyone you have every seen. I loved the way Matteo takes care of Clara and makes her feel safe. I enjoyed every single moment of this book. The way these two come together made for a well-written story that keeps you engaged and smiling as these two navigate their difficult circumstances. This is a must read!!
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