Con man Dudley Jerico sets out to rob corrupt millionaire Victor Rosso of his legendary Gemini diamond, but there's another operator in town who is out to con the con.
Unfortunately the movie Mister Jerico is not yet available on HBO Max.
| Writing | Philip Levene | Writer |
| Production | Barry Delmaine | Associate Producer |
| Production | Philip Levene | Associate Producer |
| Production | Julian Wintle | Producer |
| Sound | Laurie Johnson | Original Music Composer |
| Camera | Alan Hume | Director of Photography |
| Editing | Lionel Selwyn | Editor |
| Art | Harry Pottle | Production Design |
| Art | Harry Pottle | Art Direction |
| Costume & Make-Up | Bill Griffiths | Hairdresser |
| Costume & Make-Up | Bunty Phillips | Makeup Artist |
| Production | Ray Frift | Production Manager |
| Directing | Ivor Powell | Assistant Director |
| Art | William Green | Construction Manager |
| Sound | A. W. Lumkin | Recording Supervision |
| Sound | Denis Porter | Sound Recordist |
| Sound | Dennis Whitlock | Sound Mixer |
| Sound | Alan Willis | Sound Editor |
| Sound | A. W. Lumkin | Sound Supervisor |
| Crew | Ivan Pulis | Stunt Double |
| Crew | Roy Vincente | Stunts |
| Camera | Tony White | Camera Operator |
| Costume & Make-Up | Laura Nightingale | Wardrobe Master |
| Sound | Laurie Johnson | Conductor |
| Directing | Marjorie Lavelly | Continuity |
| Directing | Sidney Hayers | Director |
| Writing | David T. Chantler | Story |
