RedAlchemist > Status Update

Hey ladies.. can anyone help me? I am trying to remember the name of a book I read.. it is an erotic suspense/romance the plot is about a girl being kept captive in a mansion (high class brothel really) the hero is trying hard to score a deal with a gangster and he is accomodating his lacky who abuses the captive girl. The hero has a friend who grooms his "girls". The ending was cliffhanger.