Poison

When one of your ex-boyfriends dies of poisoning, it is an unfortunate circumstance, possibly a suicide. When three go the same way, it is a disturbing pattern. The wealthy and beautiful Marilyn Hollis turns from a necessary interview to conclude a case to the prime suspect in a murder investigation. The problem is that Detective Hal Willis has broken a cardinal rule of detective work: he is Hollis's newest beau.Now living with her despite the objections of Detective Steve Carella, Willis continues to do his duty as he tracks her former flames in search of a jealous murderer. But as the investigation progresses, he begins to get the sinking feeling that the killer shares his bed.Poison is Ed McBain in all his glory as his famed group of 87th Precinct detectives face off with a killer who lives and hides in their hearts.