Genre: Erotic MC Menage Romance Heat Level: 4 Word Count: 31, 500 ISBN: 978-0-3695-1366-3 Editor: Lisa Petrocelli Cover Artist: Jay Aheer

Twin Flames by Beth D. Carter

Heat Level 4
$3.99
SKU 978-0-3695-1366-3
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Sons of Sin MC

The Sons of Sin Motorcycle Club are a force to be reckoned with. Led by Saint and his twin, Sinner, their bond is unbreakable. They run the Cheyenne Chapter with respect and unwavering allegiance.

What starts out a lucrative deal with a rival club suddenly erupts into chaos when shots are fired, and the money mysteriously disappears. Frustration and suspicion fester because it becomes very clear that there is a traitor amongst them.

Across the street, Kira is an unwilling witness, and she knows where the money has been hidden. Terrified, she returns the money, but her actions spark Saint’s mistrust, and he orders Sinn to keep a watchful eye on her. A fragile bond begins to form, woven from threads of shared trauma. The line between loyalty and betrayal is razor thin. Can three seemingly different souls find healing from their intertwined destinies?

Be Warned: menage sex (MFM), anal sex, double penetration


SONS OF SIN MC SHARED WORLD

Welcome to the Sons of Sin MC, a world of blood, brotherhood, and forbidden desire.

These men rule the road with ruthless fists and merciless hearts. Feared by their enemies, loyal only to their club, they live by a code written in steel and stained in blood. But even the darkest souls can’t outrun fate when it comes in the form of a woman who tests every limit.

In this shared world, each story brings you deeper into the chaos, where danger is constant, loyalty is tested, and passion burns hotter than fire. Dark, gritty, and unapologetically sinful, these motorcycle club romances deliver all the danger and smut you crave.

Step inside the world of the Sons of Sin MC … if you’re brave enough to ride.

 

Excerpt:

Saint placed his mug into the sink and then grabbed his keys and wallet. “I’ll probably crash at the clubhouse.”

“All right,” Sinn said. “So, go ahead. Say it.”

“Say it?” Saint questioned, perplexed. “Say what?”

“Say ‘don’t do anything I wouldn’t do,’ so that let’s say you obviously failed at the fine art of seduction.”

“What?” Sometimes his brother confused the hell out of him. “Who are we seducing?”

“She’s our girl.”

Saint rolled his eyes. “Not this again.”

“Admit it. Admit you want her to be ours.”

“No.”

“Are you chicken?”

“Are you five?”

Sinn stuck his tongue out. “We always said we have to find a woman who fits both of us.”

“You said that.”

“You agreed.”

“Was I drunk when I agreed?”

“Probably,” Sinn replied with a cheeky smile. “We were drunk a lot in our youth.”

Saint shook his head. “For fuck’s sake.”

Did he want to share a woman with his brother long term? Of course, they’d sandwiched a woman in the past. Several times, in fact, and he enjoyed each encounter. But was that only sexual satisfaction or was each experience a prelude to what he truly wanted? He stomped out the back door and made a beeline for his bike. Sometimes his brother gave him a horrendous headache. Yet, he couldn’t eliminate the small voice in the back of his mind urging him that maybe Kira came into their lives for a reason.

Series:
/sons-of-sin-mc/

Product Reviews

Score: 5 out of 5 (based on 27 ratings)
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5/5
Theirs
Written by JeniT on 8th Mar 2026

Kira was struggling to get through each day and tired from fighting her demons. When she witnessed a MC fight she had to do the right thing and bring them the money that was hidden. Saint and Sinner are twins and the leaders of their MC. They are thankful for the returned money but suspicious too. Sinner is already interested in her and despite Kira shutting down his advances he gets under her skin. Saint has always been suspicious and discovers there’s more to her than he initially expected. It’s a slow build steamy romance with danger and mystery. I love the way it comes filled with circle and they find their own HEA

5/5
Great book!
Written by DBG69 on 8th Mar 2026

I really enjoyed reading this MC romance. Once I started reading it, I didn't want to put it down. I was able to read from start to finish in one sitting because I didn't want to stop reading it. Saint, Sinner and Kira are great characters that I couldn't help but cheer on. I would recommend reading this book!

4/5
Twin Flames!
Written by Mary on 8th Mar 2026

This story is part of the multi-author "Sons of Sin MC" series. It is a stand alone read about Saint, Sinn and Kira. I love a good MC romance and this one is intriguing with some twists and betrayal. There are potential triggers in this one. This one starts off with bullets flying and follows with danger, excitement, suspense, passion and much more. Saint and Kira have trust issues but luckily they have Sinn to pull them together. Sinn and Kira share a similar abuse which brings them closer. Saint and Sinn are protective and the men but she is fierce in her own right.

5/5
Loved it
Written by ccourt on 8th Mar 2026

This is a great story about two brothers and one woman. Both brothers are drawn to her. Its spicy, suspenseful, intense.

5/5
Twin Flames by Beth D. Carter
Written by LyndsayL on 8th Mar 2026

This was so good I love when you can get different authors to contribute to a series. Be prepared to be hooked from the very beginning. This has spice, and action and will keep you on your toes all the way through. I loved how this author developed her characters and the story around them. This is a must read!

5/5
SAINT, KIRA AND SINNER
Written by Gkp2460 on 8th Mar 2026

Twin Flames is book 3 in the Sons Of Sin MC, Cheyenne, Wyoming Chapter and is Saint, Sinner and Kira's story. Their journey is a feel good story. All about healing, acceptance, loyalty, devotion and love. Of course there's always a bit of intrigue, drama and danger but these protective, obsessive men take their responsibility for Kira very seriously. Completely enjoyed Twin Flames.

5/5
Doing the right thing.
Written by Mylene on 8th Mar 2026

Doing the right thing has brought trouble right to Kira's door. Is it good trouble? It is double standing in plain sight. But another also has sights on Kira. So much for doing a good deed. Good read.

5/5
Saint and Sinner
Written by Maleficent on 8th Mar 2026

This is the third in the Sons of Sins MC and Cheyenne chapter. Saint is the Pres and his twin brother Sinner is his VP. They are in the middle of a deal with a rival club, but someone starts shooting. Someone there had to be a traitor, whether it was one of his guys or theirs remains to be seen. The money for the product is gone. He never expects a woman to show up with the bag of money later in the night and wants nothing in return. Saint is not sure whether she has another agenda but his brother thinks he should take her at face value. When she is attacked, they bring her back to their house. They both believe they have found the one to complete them. This may be triggering for some due to talks about past assault.

5/5
Saint, Sinner, & Kira
Written by Avid MC Reader on 8th Mar 2026

This is the third Sons of Sin MC book and the first for the Cheyenne, Wyoming charter. Saint and Sinner run the MC and when a deal with another MC goes bad, there are suspicions all around. Kira, a waitress at the diner witnessed the deal going down and returns the money to the MC. She also fills in some details of what happened but while Sinner believes her, Saint is wary and doesn't trust her. When it becomes clear that Kira is in danger and Saint watches as Kira is attacked and intervenes, then both he and Sinner are on the same page as to her safety. Both men are drawn to her, and their feelings are reciprocated. They bond together as they strive to find who is after Kira and who is betraying the MC. There are a few twists and surprises along their journey but eventually they get their HEA.

5/5
Their Honest Girl
Written by De'Anna on 8th Mar 2026

Hang on get comfortable you won’t put this down until the last page has been turned. Saint and Sinner run the Sons of Sin MC usually they have no issues the MC runs they are brothers in every way, believe in loyalty survival depends on relying on each other, believing in each other, respect is earned, betrayal isn’t something they tolerate in fact they punish anyone who betrays them and emotions are always locked away they do their best to keep everything on the up and up. They planned a deal it was going well until everything went wrong the deal ended up with gunfire and missing money and a lot of questions but the underlying thought that was going through their mind was they had a traitor in their mix who needed to be flushed out because if they allowed the traitor to continue their MC brotherhood well that is where betrayal sits. Kira a diner waitress works her shifts goes home to repeat the next day although bikers come in she chooses to ignore them pretty much until their business spills over into her job she witnessed everything that went down but she didn’t run like a normal person would have in fact she does the total opposite (not smart if you ask me I mean come on a biker club …hello …just saying) but needless to say she decided to return the stolen money and proceeds to tell them everything she witnessed but the problems comes in with the twins Sinner believes her and Saint well that’s another story. But, our girl is smart she knows to stay clear of bikes but it is her fear of them that guides her and the danger that surrounds but she is guided by her honesty compass again why she returned the money but will Saint ever see past her honesty, the magnetic pull is there but he isn’t fully on board, can they keep her protected, who is the traitor, and where are they headed?

5/5
So steamy.
Written by Sherry on 8th Mar 2026

Spent a snowy afternoon reading this book. The story had a very good flow and was well written. The couple has very romantic chemistry between them. The author has hit this one outside the park. There is loads of action and intrigue for everyone.

5/5
Twin Flames
Written by Stacii on 8th Mar 2026

Sinner and Saint are twin leaders of the Sons oF Sin MC.. These two run it with respect, but when someone betrays them and Kira, a waitress, see this she does something they don’t understand. She gives the money back to them and tells them what happened. One believes her the other doesn’t yet. But when she gets attacked he will step in and will then. But the danger. suspense and protectiveness along with these three broken people finding their stability together.

5/5
Great
Written by vickymeowmeow on 8th Mar 2026

Very engaging story, really enjoyed how all the pieces fit together in the end. It was easy to like and admire these characters as they overcame some serious trauma in their past. The FMC was not helpless or weak and the sex was spicy. Hea was heartwarming and really enjoyable

5/5
Dark biker MFM erotic romance
Written by itsthejo on 8th Mar 2026

Book 2 of the Sons of Sin MC series. For maximum enjoyment read the books in series order. 'Can three seemingly different souls find healing from their intertwined destinies?' The characters were very complex and complicated and perfectly steamy together. Plot was intriguing and intense and well paced. World building continues to excel and impress. All in all a great addition to the series. Enjoyed immensely and highly recommend! Kick back and enjoy the read!

5/5
loved
Written by cee b on 8th Mar 2026

Loved the book. Starts out with the twins involved in a drug deal gone wrong. Cash from the deal is missing. Kira, a waitress winds up with it, returns it to Saint-the grumpy one and Sinner-the happy one. I liked the dynamic between the three. Great chemistry.

4/5
Kira, Sinn, and Saint
Written by Rachel S on 8th Mar 2026

This was a quick and intriguing read! Filled with danger, suspense, and betrayal. There were also emotional moments, a bit of humor, and spice. Kira fit right in with Saint and Sinn. I'm so glad they were able to help her heal and grow. I really enjoyed it!

4/5
Love heals all wounds
Written by DrJen on 8th Mar 2026

I enjoyed this book. The FMC felt real and you could definitely understand why she acted and felt the way she did. I loved how Sinn and Saint didn't give up on her and worked at her pace. If I had any complaint, it would be a personal one. I'm from Wyoming and although the book is set in Cheyenne, there was virtually nothing that gave you an expression of what WY is like. It could have been set anywhere and the story would be the same. That said, I still appreciate the WY shoutout and it's worth the read for sure.

4/5
Twin Flames sure burn bright !
Written by Swimfan62 on 8th Mar 2026

4 Stars for Twin Flames by ( new for me ) author Beth Carter This is an MC storyline involving twins Sinner and Saint of the Sons of Sin. Kira accidentally steps into their world when she witnessed a theft - Saint is skeptical of her honesty. Kira is a strong MFC although many things have happened to her she doesn’t need saving she continues to get back up - what she does need is safety , understanding and love. Good read !

4/5
Twin Flames
Written by Angi5252 on 8th Mar 2026

Saint and Sinners are twins and they’re as close as brothers can be. When a deal goes wrong and Kira sees what happened, she tries to make things right only to get on Saints bad side. He orders Sin to follow her and that’s when things start to change. This is a MFM book that not only has the grit of a great MC book but it also has two brothers falling in love with the same girl. This was a really great read.

5/5
Page turner
Written by Nasra on 8th Mar 2026

The story is has a good pace I like that it wasn't love at first sight. It took some time to be there, I like the difference between the brothers. The female lead was badass she didn't wait to be rescued she did her best and make it happen. It shows how good he treat herself after everything she went through she made sure not to be in the vulnerable situation again and work on herself. That is mature and decision kinda mindset. She just not give up and when she did it was understandable....and the brothers were amazing together and amazing with her in their own way.... and sinns aprons was iconic icing to the cake.

4/5
Double the trouble
Written by Jedi on 8th Mar 2026

Kira wasn't looking for love, but needs protection after witnessing something she shouldn't have - Twin brothers, the Prez and his VP - suspense, spice, getting their HEA, good cross over book.

5/5
Healing Together
Written by Luv2Read17 on 8th Mar 2026

In Cheyenne, Wyoming, four members of the local Sons of Sin MC chapter wait for members of the Bone Breakers MC. There's a deal set to go down, but it doesn't go as planned. When money goes missing, Saint (the Prez of Sons of Sin) and Sinner (the VP and identical twin of Saint) are quick to think there's a traitor in the Club. Kira, a waitress at the local diner, has a dark and traumatic past. When she finds out a co-worker somehow got their hands on the missing MC money, Kira promptly returns it. This brings about unwanted attention from Saint and Sinner as well as someone a lot more scary. Will Kira, Sinner, and Saint prevail? Can they make a relationship work between the three of them? Loved Sinn's aprons, cried for Kira's past, and Saint trying to be better for himself, his brother, and their woman were all great elements. Definitely recommend!

5/5
Sons of Sin MC Cheyenne
Written by Doris on 8th Mar 2026

You would think twins Saint and Sinner would agree on everything but that’s not the case at first in this story. Kira sees something going down and then returns the money to the MC. Sinner believes Kira’s story but Saint isn’t so sure he can trust what she says. All it took was Saint witnessing Kira being attacked and steps in to help her. Now they have to find out who is after Kira and who is betraying the MC. I loved the chemistry between Sinner, Kira and Saint. The twists and turns made this book a page turner. I have loved this author’s MC books and can’t wait to see what she brings us next.

5/5
Kira, Saint and Sinner
Written by LBing on 8th Mar 2026

This was a fun read filled with mystery, secrets, betrayal, courage and hot romance. I really enjoyed the reading ride for this one as waitress, Kira, spots an MC deal go south with shots fired. Yikes! What followed that, though, was what really caught her eye: a masked man throwing a duffle bag into a pile of tires. After retrieving the bag and seeing it was filled with money, her adventures really begin. I love how brave, honest and tough Kira was. The chemistry between her and twins Saint and Sinner was smoking hot. They were unsure, at first, if they could trust her, but soon enough, they realized she was the real deal. Now to solve the mystery of who betrayed them and the other MC... This was a one-sit read for me and I'm definitely looking forward to the next book ;D Good fun!

5/5
Flames
Written by Michele77 on 8th Mar 2026

Kira has a past that almost broke her, but she survived. After meeting twins Sinn and Saint her life changes again. Lots of heat and smolder, some violence and talk of previous rape.

4/5
Strong characters
Written by Kris08 on 8th Mar 2026

Saint and Sinner claim Kira, but it takes a bit of work… and I wasn’t sure if it was going to happen for most of the story! A drug deal has gone wrong, and she’s a witness… In a strange turn of events, she helps them and the feelings start to develop. I liked Sinn, he was all in from the start, but Saint was interesting. He was hard to like from the start, but once you learn the trauma on both sides, you can’t help but feel for them! Strong characters throughout, this is a steamy book, and I couldn’t put it down.

5/5
Great story
Written by PHOENIX96 on 8th Mar 2026

Saint and his twin brother Sinner run the MC with hard earned respect, when a deal goes south they know they have a traitor, what they dodnt expect was Kira to witness the deal and bring them the money to them, she wants no part in the MC but knows trouble and Sin and Saint are that one doesnt trust the other charms his way in, bit will Kira be their salvation? Well written the story is engaging steamy, action packed and more! MFM.

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