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.