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Brenda Vaccaro is featured as Sheila Kowalski Finley, a freewheeling society matron who has the cute habit of taking jewelry that doesn't belong to her. When her husband's chauffeur is murdered during a political fundraiser, Sheila is among the suspects, if for no other reason than she was carrying on an affair with the dead man. Inasmuch as she is an old friend of Sheila, Jessica (Angela Lansbury) sets herself to finding out who really "dun it"--and the suspects this time include the chaffeur's OTHER clandestine lover! (Be assured that Sheila's kleptomania will be deftly worked into the plotline).