The Secret of The Purple Reef is a 1960 20th Century Fox CinemaScope DeLuxe Color film based on a short story by Dorothy Cottrell entitled "The Silent Reefs". It starred soon-to-be-famous actors Richard Chamberlain and Peter Falk. It is a Caribbean-based mystery involving the disappearance of a ship called the Cloud. Although considered a "B" film, The Secret of The Purple Reef is notable in that it introduces Richard Chamberlain and Peter Falk to moviegoers as part of their early film career.