- Country: UK
- Genres: Crime, Drama
- Release: 1941-08-23
- Director: Herbert Mason
- Writers: Ken Attiwill , Roger Burford , Evadne Price
- Language: English
- Stars: Gordon Harker , Sydney Howard , Kathleen Harrison , Carla Lehmann , Bernard Lee , Cyril Cusack , Diana King , Joss Ambler , Charles Lamb , Raymond Huntley
- Runtime: 78 min
- Awards: N/A
- AKA: Once a Crook (United States of America) , Once a Crook (United Kingdom) , Once a Crook
- Plot: N/A
- IMDB:tt0033979
Once a Crook Cast · · · ALL
Herbert Mason
Director
Gordon Harker
Charlie Hopkins
Sydney Howard
Hallelujah Harry
Kathleen Harrison
Auntie
Carla Lehmann
Estelle
Bernard Lee
Duke
Cyril Cusack
Bill Hopkins