The marriage was supposed to be fake. Then he threw me over his shoulder and carried me to his bed. Sergei Petrov is about to become one of the richest men in the country, and while this Russian mob boss is counting his cash I'm scraping together pennies to pay for my mother's care facility. So when I overhear a conversation that I suspect he'd want to know about, I bring the information to him. But instead of paying me, he proposes a much more intimate arrangement. Marriage. It's supposed to be just a façade, but as my new husband claims me for the first time with my ass still sore from a stern reminder that he expects to be obeyed, it all suddenly feels very, very real. But a deal's a deal, and eventually we'll have to stop pretending. Except I'm not sure we ever were... Publisher's Unbreakable Vow is a stand-alone romance which is the third book of the Sacred Obsession series. It includes spankings and rough, intense sexual scenes. If such material offends you, please don't buy this book.