Allied prisoners of various nationalities pool their resources to plan numerous escapes from an "escape-proof" German P.O.W. camp housed in a Medieval castle.
John Mills
as Pat Reid
Eric Portman
as Colonel Richmond
Frederick Valk
as Kommandant
Denis Shaw
as Priem
Lionel Jeffries
as Harry Tyler
Christopher Rhodes
as 'Mac' McGill
Richard Wattis
as Richard Gordon
Ian Carmichael
as Robin Cartwright
Bryan Forbes
as Jimmy Winslow
Theodore Bikel
as Vandy
Eugene Deckers
as La Tour
Anton Diffring
as Hauptmann Fischer
