 | Gregory Peck als Bill Forrester |
 | Win Min Than als Anna |
 | Brenda De Banzie als Miss McNab |
 | Bernard Lee als Dr. Harris |
 | Maurice Denham als Blore |
 | Lyndon Brook als Carrington |
 | Anthony Bushell als Aldridge |
 | Josephine Griffin als Mrs. Forrester |
 | Ram Gopal als Mr. Phang |
 | Jack McNaughton als Sergeant (uncredited) |
| Harold Siddons als Injured Navigator (uncredited) |
| Mya Mya Spencer als Dorothy (uncredited) |
| John A. Tinn als Jeweler (uncredited) |
| Soo Ah Wong als Smoking Old Woman (uncredited) |
| Lane Meddick als Radio Operator (uncredited) |
| Eric Ambler | Screenplay |
| Robert Parrish | Director |
| Eric Boyd-Perkins | Sound Editor |
| Clive Donner | Editor |
| John Bryan | Producer |
| H. E. Bates | Novel |
| Geoffrey Unsworth | Director of Photography |
| Bill Warrington | Special Effects |
| Charles Staffell | Special Effects |
| Muir Mathieson | Conductor |
| Gordon K. McCallum | Sound Recordist |
| Dario Simoni | Set Dresser |
| Roy Goddard | Production Manager |
| Jack Maxsted | Art Direction |
| Iris Tilley | Hair Designer |
| Earl St. John | Executive Producer |
| John Veale | Original Music Composer |
| Dudley Messenger | Sound Recordist |
| David W. Orton | Assistant Director |
| James Bawden | Camera Operator |
| Harry Miller | Sound Editor |
| Arthur Alcott | Production Supervisor |
| Geoffrey Rodway | Makeup Designer |
| Joan Foster | Continuity |
