Vampish miss Dolan hires hardboiled P.I. Harry Dobbs to tail her shady boyfriend. Harry realizes that the man leads a double life but then his client disappears. Harry teams up with his own tail, P.I. Stella Wynkowski, to clear things up.
Miriam promises her lovers the gift of eternal life, but John, her companion for centuries, suddenly discovers that he is getting old minute by minute, so he looks for Dr. Sarah Roberts, a researcher on the mechanisms of aging, and asks her for help.
Roberta is a bored suburban housewife who is fascinated with a woman, Susan, she only knows about by reading messages to and from her in the personals section of the newspaper. This fascination reaches a peak when an ad with the headline "Desperately Seeking Susan" proposes a rendezvous. Roberta goes too, and in a series of events involving amnesia and mistaken identity, steps into Susan's life.
A hit-man tries to seduce the mother of a child who witnessed his most recent kill.