Invisible/James Patterson & David Ellis/399 pgs

This is the third novel that James Patterson has written with David Ellis (Guilty Wives & Mistress are the others).  I think it may be the best one also.  Emmy Dockery's sister has died in a fire that Emmy thinks may be linked to a number of other fires.  All the fires are considered accidental and no one believes her.  She finally goes to her ex-fiance, who just happens to be a retired FBI agent and they find a link to all the fires.  The story is interspersed with recording sessions from the killer which you think are giving you an idea of who the killer is but you may be surprised at the end of the book.