A young man inherits a mansion in a Florida swamp from an uncle he never knew he had. When he, his assistant and the estate's executor arrive at the house, the audience catches sight of someone crawling in the window, though the house is supposed to be unoccupied. As the house staff begins to arrive they sense a strange presence in the house, and when a young woman no one knows runs into the house to escape a knife-wielding psycho, the occupants realize they may be in danger from both outside and inside the house.

Cast

Francis X. Bushman Jr.

Lynn Claymore

Jack Perrin

Richard Mason

Kathryn McGuire

Mary Bronson

Edward Peil Sr.

Suie Chang

Charles Belcher

Samuel Lund

Nora Cecil

Mrs. Hart

Martin Turner

Trohelius Snapp

Al Hallett

Otis the Butler

Andrew Waldron

Peter Marlin

Larry Fisher

Red O'Connor