Top Cast
Explore Star Directory →
John Beal
Milton Higby
Trudy Marshall
Marge Andrews
Jimmy Lloyd
Larry Summers
Helen Mowery
Sally Guthrie
Wilton Graff
Albert Loring
Barbara Read
Martha Higby (as Barbara Reed)
Charles Trowbridge
John Ballin
Harry Hayden
Custer Bidwell
William Newell
Smiley
Selmer Jackson
Edward Clemmons
Robert B. Williams
Officer Johnson
Stanley Blystone
Patrolman - Accident Scene (uncredited)
Claire Carleton
Receptionist (uncredited)
Kernan Cripps
Policeman - Coroner's Office (uncredited)
Eddie Dunn
Detective Lt. Dillon (uncredited)
Douglas Fowley
Jim Guthrie (uncredited)
Buddy Gorman
Johnny (uncredited)
John Hamilton
R. C. Hurlbert - Coroner (uncredited)
Release History & Theatrical Window
October 9, 1947
Wide Cinema Exhibition
Key Information & Fast Facts
- Director
- D. Ross Lederman
- Screenplay & Story
- Edward Bock
- Original Title
- Key Witness
- Country of Origin
- United States of America
- Spoken Languages
- English
- Runtime
- 1h 7m
- Production Studios
- Columbia Pictures
Creative Leadership & Key Crew
D. Ross Lederman
Edward Bock, J. Donald Wilson, Raymond L. Schrock
Philip Tannura
Dwight Caldwell
Rudolph C. Flothow
Department Leadership Roster
D. Ross Lederman
Director
Rudolph C. Flothow
Producer
Philip Tannura
Director of Photography
Dwight Caldwell
Editor
Edward Bock
Screenplay
Age Classification & Content Advisories
Official viewer rating standards and content warnings across international classification boards.
NR: Not Rated — Evaluated outside standard classification boards.
International Certification Matrix
Not Rated — Evaluated outside standard classification boards.
Production Stills & Gallery
Official cinematic photography and background stills for Key Witness.
Featured In Curated Collections
Editorial lists, community rankings, and cinematic collections featuring Key Witness.
ALLL MOVIESSS
Film Noir
Classic-era film noir, 1940 to 1959.
Noir or Never
The dark corners of human desire, framed in shadow and cynicism. These moody masterpieces feature razor-sharp dialogue, fatal attractions, and the kind of nightmares that wear elegant suits.
Marin Noir
Noir Marin
Film Noir
Similar Titles to Key Witness
Movies sharing stylistic DNA, tone, and thematic storytelling
7.6
7.8
6.2
5.5
4.5
5.7
5.5
6.7
7.7
8.1
7.0
7.3
7.0
7.9
7.6
6.1
6.6
7.0
6.7
5.4
More Like Key Witness
Recommended titles matching themes, cast, and genres.
Frequently Asked Questions About Key Witness
Quick factual answers about cast, synopsis, director, box office, and release information.
What is Key Witness about?
A man takes over the identity of a dead man while on the lam from a crime he didn't commit.
Who directed Key Witness?
Key Witness was directed by D. Ross Lederman.
Who stars in Key Witness?
The principal cast of Key Witness includes John Beal, Trudy Marshall, Jimmy Lloyd, Helen Mowery, Wilton Graff.
When was Key Witness released and how long is it?
Key Witness was released in 1947 with a total runtime of 1h 7m.
What is the age rating and content advisory for Key Witness?
Key Witness holds official age classifications: US: NR (Not Rated — Evaluated outside standard classification boards.).