Directed by Dan Milner | Starring: Kent Taylor, Michael Whalen, Cathy Downs, Rodney Bell

A marine biologist and a government agent investigate mysterious deaths and rumors of a sea monster in a secluded ocean cove, and find themselves involved with a marine biology professor conducting secretive experiments, international spies trying to steal his secrets, a radioactive light on the sea bottom, and the malevolent thing which guards it.

IMDb The Phantom from 10,... movie posters