Poisoned Heart (Twisted Mafia Vows, Book 1) - K.A. Merikan

It was supposed to be blackmail. Now we’re choosing the wedding cake. I’m Corvus Van der Horn, and as my family’s poisoner and torturer, I’m a master of control, cruelty, and patience. My prisoners are faceless pawns who ought to fear me. He should be forgettable—a washed-up fighter and gambler with more debt than sense. Then I saw his phone. Turns out half the city’s men would sell their souls to let him wreck them. Now I can’t stop asking why.