
"The greatest adventure since men fought on earth - or flew over it!"
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.
Wing Commander Roy Grant

Lieutenant Erik Bergman

Hilde Bergman

Air Vice-Marshal Davis

Group Captain Don Barrett

Squadron Leader Frank Adams

Flight Lieutenant Gillibrand

Flight Lieutenant Scott

Flying Officer Hoppy Hopkinson

Flying Officer Bissell
Flying Officer Evans
Rosie, barmaid at the Black Swan Inn
Lieutenant Nigel
Flight Lieutenant Singh
Flight Lieutenant Frank
Lieutenant Jones

WAAF Sergeant Mary Blake / Bissell

SS Interrogator
Lieutenant Maner (uncredited)
Ericson, Norwegian Resistance (uncredited)
Johanson, Norwegian Resistance (uncredited)