Dr. Lawrence Strelson (Melvyn Douglas) is a famous psychiatrist who conducts a group-therapy session with several high-priced professionals. It turns out that one of the patients is a murderer; the truth will come out, and it will be a shocker. Among the special guest suspects are Eric Nicholson (Gig Young), Carlotta Mauridge (Anne Baxter), Jeremy Siddack (Patrick O'Neal), Julie Klanton (Dana Wynter) and Dr. Neesden (Leslie Nielsen).
