Peter Godwin

After Dr. Bill Harford's wife, Alice, admits to having sexual fantasies about a man she met, Bill becomes obsessed with having a sexual encounter. He discovers an underground sexual group and attends one of their meetings -- and quickly discovers that he is in over his head.

A 19th century woman, who has become one of the undead, acts as a hired killer in modern times. When she starts knocking off part of the elite businessmen, "The Illuminati", who secretly are taking over business and the government, she becomes the target of a hired Scotland Yard detective. Of course, the head of "The Illuminati" is the vampire who first gave her immortality.