Drama set in an Italian prisoner of war camp during World War 2, where a group of British soldiers find their plans for escape thwarted by a mysterious traitor in their midst.
| Directing | Don Chaffey | Director |
| Writing | Frank Harvey | Screenplay |
| Writing | Michael Gilbert | Novel |
| Writing | Bryan Forbes | Screenplay |
| Directing | Ronald Spencer | Assistant Director |
| Costume & Make-Up | Bobbie Smith | Hairdresser |
| Sound | John Cox | Sound Supervisor |
| Art | Ray Simm | Art Direction |
| Camera | Arthur Grant | Director of Photography |
| Editing | John Trumper | Editor |
| Costume & Make-Up | Freddie Williamson | Makeup Artist |
| Sound | Red Law | Sound Recordist |
| Sound | George Stephenson | Sound Recordist |
| Camera | Robert Walker | Camera Operator |
| Production | Philip Shipway | Location Manager |
| Sound | Francis Chagrin | Original Music Composer |
| Costume & Make-Up | Jack Verity | Wardrobe Supervisor |
| Directing | Yvonne Richards | Continuity |
