Hit Man
By Lawrence Block
Keller...suffers from loneliness, deeply conflicted memories of childhood, and an inchoate longing for things he can't even identify...He falls into and out of a series of doomed relationships. He adopts a dog and dotes on it, neurotically. He tries psychotherapy. Keller is a modern urban Everyman – except that he makes his living as a contract killer. (from BookList)
