This is the second novel in Brett Battles' Jonathan Quinn series and while I think it could be read as a stand alone novel, the first book, The Cleaner, really does introduce all the characters and how they are connected in the second book (plus you get some background history on Quinn) but not too ...
Description: A friend and old colleague has been murdered. A woman has gone missing. And for Jonathan Quinn, this time it's personal.Anonymity. Trust. Professionalism. In his world, Jonathan Quinn has a few rules. He'll get rid of bodies that have to disappear; nothing ever gets traced back to him. ...