The film stars Richard Conte, with support from a British cast.
Conte's sister has disappeared; in fact, she is murdered and buried before we see the opening credits, so some of the suspense is quickly gone. Conte's aunt just happens to know a 17-year-old named Annie Jones (Francesca Annis) who can "find things." Halfway through the film the audience is let in on pretty much everything, so there goes the rest of the suspense.
Everyone does their job competently, but it's interesting to see Conte constantly making sarcastic remarks. He also spends most of the film in a state of sexual arousal.