Ex-gevangene Eddie en zijn vrouw Kristine proberen een nieuw leven op te bouwen voor zichzelf en hun dochter Kathy in San Francisco, maar politieagent Mike Vido is vastbesloten Eddie terug naar de gevangenis te sturen.
Nee, helaas is Once a Thief nog niet beschikbaar op Netflix in Nederland.
| Directing | Ralph Nelson | Director |
| Writing | Zekial Marko | Screenplay |
| Sound | Lalo Schifrin | Original Music Composer |
| Camera | Robert Burks | Director of Photography |
| Editing | Fredric Steinkamp | Editor |
| Production | Jacques Bar | Producer |
| Directing | Erich von Stroheim Jr. | Assistant Director |
| Art | Paul Groesse | Art Direction |
| Costume & Make-Up | Sydney Guilaroff | Hairstylist |
| Production | Fred Engel | Associate Producer |
| Production | J. Paul Popkin | Production Supervisor |
| Sound | Franklin Milton | Recording Supervision |
| Production | Ralph Nelson | Associate Producer |
| Art | George W. Davis | Art Direction |
| Art | Henry Grace | Set Decoration |
| Costume & Make-Up | William Tuttle | Makeup Supervisor |
| Art | Jack Mills | Set Decoration |
| Writing | Zekial Marko | Novel |
| Production | Lindsley Parsons Jr. | Assistant Production Manager |
| Sound | Lalo Schifrin | Conductor |
| Sound | George 'Red' Callender | Musician |
| Sound | Paul Horn | Musician |
| Sound | Buddy Collette | Musician |
| Sound | Conte Candoli | Musician |
| Crew | Walter Kelley | Dialogue Coach |
| Sound | Shelly Manne | Musician |
| Sound | Howard Roberts | Musician |
| Sound | Artie Kane | Musician |
