During the World War II, the prisoners of a German camp in a Greek island are trying to escape. They not only want their freedom, but also seek an ineffable treasure hidden in a monastery at the summit of the island's mountain.
| Directing | George P. Cosmatos | Director |
| Writing | Richard S. Lochte | Story |
| Writing | Edward Anhalt | Screenplay |
| Writing | George P. Cosmatos | Story |
| Writing | Richard S. Lochte | Screenplay |
| Editing | Ralph Kemplen | Editor |
| Camera | Gilbert Taylor | Director of Photography |
| Camera | Derek V. Browne | Camera Operator |
| Sound | Ken Nightingall | Boom Operator |
| Costume & Make-Up | Eric Allwright | Makeup Artist |
| Production | Jack Wiener | Producer |
| Production | David Niven Jr. | Producer |
| Crew | Arlene Phillips | Choreographer |
| Costume & Make-Up | Paul Engelen | Makeup Artist |
| Production | Richard Green | Location Manager |
| Production | Irene Lamb | Casting |
| Crew | John Richardson | Special Effects |
| Crew | Vic Armstrong | Stunt Coordinator |
| Camera | Ray Andrew | Steadicam Operator |
| Directing | Derek Cracknell | Assistant Director |
| Sound | Lalo Schifrin | Original Music Composer |
| Sound | Nicholas Stevenson | Sound Editor |
| Crew | Hunt Downs | Unit Publicist |
| Production | Colin M. Brewer | Associate Producer |
| Costume & Make-Up | Yvonne Blake | Costume Design |
| Camera | Bob Penn | Still Photographer |
| Sound | Derek Ball | Sound Mixer |
| Art | Michael Stringer | Production Design |
| Art | John Graysmark | Supervising Art Director |
| Crew | Tracey Eddon | Stunt Double |
