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.
Movie tag line: "The greatest adventure since men fought on earth - or flew over it!"
Production companies:
Character: Wing Commander Roy Grant
Character: Lieutenant Erik Bergman
Character: Hilde Bergman
Character: Air Vice-Marshal Davis
Character: Group Captain Don Barrett
Character: Squadron Leader Frank Adams
Character: Flight Lieutenant Gillibrand
Character: Flight Lieutenant Scott
Character: Flying Officer Hoppy Hopkinson
Character: Flying Officer Bissell
Character: Flying Officer Evans
Character: Rosie, barmaid at the Black Swan Inn
Character: Lieutenant Nigel
Character: Flight Lieutenant Singh
Character: Flight Lieutenant Frank
Character: Lieutenant Jones
Character: WAAF Sergeant Mary Blake / Bissell
Character: SS Interrogator
Character: Lieutenant Maner (uncredited)
Character: Ericson, Norwegian Resistance (uncredited)
Character: Johanson, Norwegian Resistance (uncredited)