A disparate group of volunteers are trained as saboteurs and parachuted into Belgium to blow up an office containing important Nazi records and to rescue a prominent S.O.E. agent, who is being interrogated by the Germans for vital information.

• Ealing Studios
• J. Arthur Rank Organisation
• Robert Beatty
• Simone Signoret
• Jack Warner
• Gordon Jackson
• Paul Dupuis
• James Robertson Justice
• Eugene Deckers
• John Slater