Remastered. Juliet Prowse portrays Nora, a deejay and hostess at a sleazy midtown discothèque who starts to receive obscene phone calls. Nora dismisses them, until she crosses paths with Bill Madden (Jan Murray), a grim, obsessive police lieutenant specializing in sex crimes (his obsession, as he later reveals, derives from the fact that his own wife was assaulted and murdered while out alone one night); he manages both to offend and frighten Nora with his depth of knowledge and suspicions about the kinds of people who commit those crimes. They develop a close but wary relationship even as the caller, whoever he is, proves to know not only a great deal about her personal life, but also about events transpiring right inside her apartment.