- Country: USA
- Genres: Crime, Drama, Mystery
- Release: 1941-06-27
- Director: Joseph H. Lewis
- Writers: Edward Bennett , Arthur Hoerl
- Language: English
- Stars: Eric Linden , Ann Doran (1911–2000) , Constance Worth , Donald Curtis , Weldon Heyburn , Ben Alexander (I) (1911–1969) , Dudley Dickerson , Bernice Pilot , Ray Erlenborn , I. Stanford Jolley
- Runtime: 70 min
- Awards: N/A
- AKA: Criminals Within , La amenaza oculta (Mexico) , Army Mystery (United States of America) , Criminals Within (United Kingdom) , Criminals Within (United States of America) , Criminali (Italy)
- Plot: A scientist is murdered by foreign agents after having developed a powerful new explosive. The scientist's brother, an army corporal, goes AWOL to discover the identities of the killers. Army intelligence officers are looking for him, as they believe he has a list of scientists who helped his brother develop the new weapon, putting them in danger. The spy ring is also after him, but they want the list for a different reason.
- IMDB:tt0033500
Criminals Within Cast · · · ALL
Joseph H. Lewis
Director
Eric Linden
Greg Carroll
Ben Alexander
(I)
(1911–1969)
Sgt. Paul
Donald Curtis
Lt. John Harmon
Ann Doran
(1911–2000)
Linda
Constance Worth
Alma Barton
Weldon Heyburn
Sgt. Blake
Earle Hodgins
Wallace
I. Stanford Jolley
Carl Flegler
Emmett Vogan
Harold
Bill Cartledge
Elevator Operator
Jack Cheatham
Agent Martin
Dudley Dickerson
Sam Dillingham
Ray Erlenborn
Pvt. Norton
Robert Frazer
Capt. Bryant
Boyd Irwin
Col. Longstreet
George Lynn
Prof. Carroll
Dennis Moore
Stanley Hume - 5th Columnist
Bernice Pilot
Mamie
William Ruhl
Capt. Gray