- Country: USA
- Genres: Crime, Drama, Film-Noir
- Release: 1955-05-19
- Director: R.G. Springsteen
- Writers: John K. Butler
- Language: English
- Stars: Sean McClory (I) (1924–2003) , Joanne Jordan , Ray Middleton , Jaclynne Greene , Lee Van Cleef , James Griffith , Hugh Sanders , Roy Roberts , Peter Mamakos , Robert Crosson
- Runtime: 70 min
- Awards: N/A
- AKA: Mă ocup de lumea cealaltă (Romania) , I Cover the Underworld (United States of America) , I Cover the Underworld , I Cover the Underworld (United Kingdom) , Den undre världens skräck (Finland) , I Cover the Underworld (Canada) , G men: evaso 50574 (Italy) , Frente a los gangsters (Argentina) , Die Ratten von Chicago , Alamaailman hurjat (Finland) , Die Ratten von Chicago (Austria) , Corrompidos pelo Crime (Brazil)
- Plot: John O'Hara, a divinity priest student endeavors to help the police, rolling up a gang of criminals. John poses as his twin brother Gunner O'Hara a gangster, who is in prison. John is finally accepted by the gang and he succeeds improving the efficiency of this gang by cooperating closely with other criminal gangs. John coerces them these gangs, keeping careful records of their various criminal activities. Problems for John and the police arise when Gunner O'Hara escapes from prison.
- IMDB:tt0048189
I Cover the Underworld Cast · · · ALL
R.G. Springsteen
Director
Sean McClory
(I)
(1924–2003)
Gunner O'Hara / John O'Hara
Joanne Jordan
Joan Marlowe
Ray Middleton
Police Chief Corbett
Jaclynne Greene
Gilda
Lee Van Cleef
Flash Logan
James Griffith
Smiley Di Angelo
Hugh Sanders
Tim Donovan
Roy Roberts
District Attorney
Peter Mamakos
Charlie Green
Robert Crosson
Danny Marlowe
Frank Gerstle
Dum-Dum Wilson
Willis Bouchey
Warden Lewis J. Johnson
Philip Van Zandt
Jake Freeman
Don Haggerty
Prison Guard (uncredited)