“HE MADE HIS ENEMIES BEG FOR MERCY!”
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.
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Boris Karloff
David Mallory
Warren Hull
Jim Travers
Jean Rogers
Joan Mallory
Alan Baxter
John Baron aka The Kid
Hobart Cavanaugh
Petty Louie
Samuel S. Hinds
Steven Ranger
David Oliver
Mike Callahan
Ward Bond
Fingers
Frank Reicher
Carl - gang engineer
Edwin Maxwell
Lawyer Kruger
George Cleveland
Sam Adams - Company Engineer (uncredited)
Ruth Fallows
Waitress (uncredited)
George Humbert
Mr. Spinelli (uncredited)
Nina Campana
Mrs. Spinelli (uncredited)
Charles C. Wilson
Police Capt. Wallace (uncredited)
