TJ is usually strong, protective, devoted and loving. But he is struggling with feelings of guilt and has a secret he refuses to reveal. But it is important enough to him that he is willing to leave his wife that he was happy with.

Cassie is usually quiet, polite, sweet, and loves TJ and the life they shared together. She feels like they were compatible in every way.  She is clueless as to why he distanced himself from her and is willing to them give them up. But she is done sitting back and letting him dictate her future and is determined to get answers.

She sees a way to try to get his attention to win him back, and it involves Vault of Sin, the sex club he owns with his friends that she has not been a part of. But trying to get back into his life to get closer might just result in pushing him farther away or hurting her even worse. 

He is torn up by guilt and fear of ruining her, but at the same time is making them both miserable. He is buried under a secret and guilt. He holds tight to his decision. And she has no clue what the real issue even is, and time is running out. Will she find out his secret and be able to deal with it? Will she make him see they still belong together or will something else make him realize he also needs to fight?

It was well written, intriguing, and interesting, but I had a big issue that affected by enjoyment of this installment.  I spent most of the book mad at TJ or just plain frustrated with him. I could not imagine what secret he was holding that could be worth the pain he was putting them both through. I was anticipating the thing keeping them apart would have been a more fundamental difference in beliefs, desires, or lifestyle that would be hard to fix. And when it was finally revealed, I still did not buy it as worth giving up their marriage for.  But with that being said, TJ was the ultimate protector. He really thought he was keeping her from getting hurt and that it was something he could protect her from. And the protective, caring, sweet parts of him are some of the reasons I liked him in the first book. But his martyr tendencies in this one really got to me. I liked that she had a back bone and some self preservation.

I enjoyed getting more with the side characters Shay and Leo (Shot of Sin) and the mysterious, harsh, voyeur Brute. I like their rapport and bond between the friends even when they are fighting over important decisions. I am not a huge fan of sex club shenanigans in books, but their club is more of a place for like minded people to explore their sexuality in a safe environment and is respectful of the clientele. There were more peeks to the kink and just a few club scenes to deal with. I am interested in Brute's story since he is intriguing and a very strong personality, but I sense that underneath his tough exterior is a man as needy as his friends.

Vault of Sin, Book 1 

Leo Petrova is between a rock and the hard place in his pants. Shot of Sin, the night club he owns with his two best friends, is short one bartender downstairs. The only available replacement is the upstairs bar manager—the one woman Leo knows he can’t take downstairs, can’t have, can’t touch. The one time he gave in to temptation convinced Leo that Shay’s no match for his sexual demands. 

Only a select few know Shot of Sin’s guilty secret, that beneath the packed dance floor lies a very private sex club—the Vault. The place Leo can let his sexual proclivities run wild. 

Shay Porter is curious as to why her boss, the king of mixed messages, seems almost desperate to keep her from discovering what’s on the other side of the guarded door at the back of the club. 

Sliding out of her comfort zone and into Leo’s arms risks everything. Their friendship, the Vault, and most of all, their hearts. 

Warning: This sex club does not carry the government’s stamp of approval. Contains devilish debauchery, delightful deviance, and dancing on the edge of the darkest of sexual desires.