When Norwegian resistance leader Lieutenant Erik Bergman reports the location of a German V-2 rocket fuel plant, the Royal Air Force's 633 Squadron is assigned the mission to destroy it. The plant is in a seemingly-impregnable location beneath an overhanging cliff at the end of a long, narrow fjord lined with anti-aircraft guns. The only way to destroy the plant is by collapsing the cliff on top of it.
| Writing | Howard Koch | Screenplay |
| Writing | James Clavell | Screenplay |
| Directing | Walter Grauman | Director |
| Production | Cecil F. Ford | Producer |
| Camera | Edward Scaife | Director of Photography |
| Art | Michael Stringer | Production Design |
| Editing | Bert Bates | Editor |
| Sound | Ron Goodwin | Music |
| Camera | Jack Atcheler | Camera Operator |
| Writing | Frederick E. Smith | Novel |
| Art | Mickey Lennon | Dressing Prop |
| Directing | Ted Sturgis | Assistant Director |
| Camera | Arthur Evans | Still Photographer |
| Sound | J.B. Smith | Sound Recordist |
| Camera | John Wilcox | Additional Photography |
| Sound | John Bramall | Sound Recordist |
| Directing | Connie Willis | Continuity |
| Crew | Tom Howard | Special Effects |
| Sound | Teddy Mason | Sound Editor |
