Night Key_
"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.
Starring
Boris Karloff, Warren Hull, Jean Rogers
Updated Feb 16, 2026
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Year context
Night Key was released 89 years ago in 1937.
Overview
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.
Night Key is a Science Fiction, Crime film with a runtime of 1h 8m.
CAST (16)
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)
RF
Ruth Fallows
Waitress (uncredited)
George Humbert
Mr. Spinelli (uncredited)
NC
Nina Campana
Mrs. Spinelli (uncredited)
Charles C. Wilson
Police Capt. Wallace (uncredited)
Chuck Hamilton
Policeman (uncredited)
BOX OFFICE
$192K
Budget
DETAILS
Release
Status
Released
Runtime
68 min (1h 8m)
Country
Rating
6.2/10 (33 votes)
Budget
$192,000
FREQUENTLY ASKED QUESTIONS
What is Night Key about?
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.
How long is Night Key?
Night Key has a runtime of 68 minutes (1h 8m).
Who stars in Night Key?
The cast of Night Key includes Boris Karloff, Warren Hull, Jean Rogers, Alan Baxter, Hobart Cavanaugh.
What is the rating of Night Key?
Night Key has a rating of 6.2 out of 10 based on 33 votes on TMDB.
GENRES (2)
Science Fiction
Crime