Night Key

"The inventor of a new top-of-the-line burglar alarm system is kidnapped by a gang in order to get him to help them commit robberies."

Boris Karloff

as David Mallory

Warren Hull

as Jim Travers

Jean Rogers

as Joan Mallory

Alan Baxter

as John Baron aka The Kid

Hobart Cavanaugh

as Petty Louie

Samuel S. Hinds

as Steven Ranger

David Oliver

as Mike Callahan

Ward Bond

as Fingers

Frank Reicher

as Carl - gang engineer

Edwin Maxwell

as Lawyer Kruger

George Cleveland

as Sam Adams - Company Engineer (uncredited)

Ruth Fallows

as Waitress (uncredited)

George Humbert

as Mr. Spinelli (uncredited)

Nina Campana

as Mrs. Spinelli (uncredited)

Charles C. Wilson

as Police Capt. Wallace (uncredited)

Chuck Hamilton

as Policeman (uncredited)

Riven