Jigsaw

A killer calling himself Thanatos, the Greek God of death, has been sending e-mails to entertainment critic Carroll Quint, taunting him with clues about his next target from Alfred Hitchcock movies. The victims were all friends of Quint: a screenwriter, an actor, and a makeup artist. Since Quint is the one person connected to all three victims, the police have fingered him for the murders. Quints mother, a former starlet and movie trivia buff, points him in the right direction when she tells him, Thanatos is like one of the midgets in Casablanca, Carroll. Hes right there, you see him, but you dont take any notice.

This is #1 in A Carroll Quint Mystery.