An American engineer reaches Mombasa to finish the works of an African railroad and to find his predecessor, who has mysteriously disappeared. While the work continues, will have to face several obstacles, especially violent local tribes, Arabs slave traders and wild animals.
| Directing | Richard Thorpe | Director |
| Writing | J.A. Hunter | Book |
| Writing | Earl Felton | Screenplay |
| Writing | Richard Maibaum | Story |
| Writing | Cyril Hume | Story |
| Writing | John Gilling | Screenplay |
| Writing | Daniel P. Mannix | Book |
| Production | Irving Allen | Producer |
| Art | Ray Simm | Art Direction |
| Costume & Make-Up | Paul Rabiger | Makeup Artist |
| Editing | Geoffrey Foot | Editor |
| Production | James Liggat | Casting |
| Camera | Ernest Day | Camera Operator |
| Production | Albert R. Broccoli | Producer |
| Camera | Ginger Gemmel | Camera Operator |
| Sound | Alan Pattillo | Sound Editor |
| Crew | Cliff Richardson | Special Effects |
| Camera | Ted Moore | Director of Photography |
| Directing | Eileen Head | Script Supervisor |
| Costume & Make-Up | Bobbie Smith | Hairstylist |
| Sound | William Alwyn | Music |
| Camera | Michael Walter | Key Grip |
| Directing | Ted Sturgis | Assistant Director |
| Sound | Bert Ross | Sound Recordist |
| Sound | Muir Mathieson | Conductor |
| Costume & Make-Up | Elsa Fennell | Wardrobe Supervisor |
| Production | Fred Gunn | Production Supervisor |
| Production | John Workman | Production Manager |
| Sound | Wally Milner | Sound Mixer |
| Production | Eva Monley | Location Manager |
| Directing | Eileen Head | Continuity |