It is May 1944, two weeks before D-day. Britain stands poised for the long-awaited invasion of France - thousands of troops wait anxiously for the orders to come for embarkation. MI5 is horrified to discover the top-secret codewords for the invasion suddenly appearing as clues in the Daily Telegraph crossword. Two agents are immediately dispatched to confront the culprit, the headmaster of a boys' school in southern England.
Michael Gough
as Mr Maggs
Michael Quill
as Reg
Demetri Jagger
as Dennis
Jacob Krichefski
as Norman
John Carson
as Lauderdale
Paul Brooke
as Lilliwhite
Ian Thompson
as Meadows
Sally Noden
as Jennifer
Eliza Hunt
as Mrs Anderson
Charles Lewsen
as Mr Bellows
Frank Williams
as Major Sykes
Alan David
as Mr Smout
