Lawrence Block 
Ticket to the Boneyard [EPUB ebook] 

A pulse-pounding Matt Scudder story.The streets of New York are never safe, but the release of James Leo Motley, a psychopath who went down swearing revenge on PI Matt Scudder, means death is out there. No one is safe: friends, lovers, or just those unfortunate enough to share the Scudder name. Soon the streets are littered with the dying and Matt begins to question his new found sobriety.