A member of British Intelligence assumes a fictitious criminal identity and allows himself to be caught, imprisoned, and freed in order to infiltrate a spy organization and expose a traitor; only, someone finds him out and exposes him to the gang...
| Directing | John Huston | Director |
| Writing | Walter Hill | Screenplay |
| Writing | Desmond Bagley | Novel |
| Production | John Foreman | Producer |
| Camera | Oswald Morris | Director of Photography |
| Editing | Russell Lloyd | Editor |
| Production | Weston Drury Jr. | Casting |
| Art | Alan Tomkins | Art Direction |
| Art | Terence Marsh | Production Design |
| Directing | Penny Daniels | Script Supervisor |
| Camera | Jimmy Turrell | Camera Operator |
| Crew | Cliff Richardson | Special Effects |
| Crew | Ron Ballinger | Special Effects |
| Sound | Leslie Hodgson | Sound Editor |
| Sound | Don Sharpe | Sound Editor |
| Costume & Make-Up | A. G. Scott | Hairstylist |
| Crew | Greg Powell | Stunts |
| Sound | Maurice Jarre | Original Music Composer |
| Sound | Maurice Jarre | Conductor |
| Directing | Michael Stevenson | Second Assistant Director |
