After three British agents are assigned to assassinate a mysterious German spy during World War I, two of them become ambivalent when their duty to the mission conflicts with their consciences.
Unfortunately the movie Secret Agent is not yet available on HBO Max.
| Costume & Make-Up | Joe Strassner | Costume Design |
| Art | Oscar Friedrich Werndorff | Art Direction |
| Costume & Make-Up | Albert Jullion | Set Dressing Artist |
| Crew | Phillip Dorté | Sound Recordist |
| Editing | Charles Frend | Editor |
| Directing | Alfred Hitchcock | Director |
| Writing | W. Somerset Maugham | Novel |
| Writing | Campbell Dixon | Theatre Play |
| Production | Ivor Montagu | Producer |
| Sound | Hubert Bath | Music |
| Camera | Stephen Dade | Camera Operator |
| Production | Michael Balcon | Producer |
| Camera | Bernard Knowles | Director of Photography |
| Writing | Charles Bennett | Screenplay |
| Directing | Pen Tennyson | Assistant Director |
| Camera | Reg Johnson | Assistant Camera |
| Sound | Louis Levy | Music Director |
| Sound | John Greenwood | Music |
| Art | Albert Jullion | Set Dresser |
| Sound | Philip Dorté | Sound Recordist |
| Camera | Gerry Massy-Collier | Assistant Camera |
| Writing | Ian Hay | Writer |
| Writing | Jesse Lasky Jr. | Writer |
