
"The true enigma was the man who cracked the code."
Based on the real life story of legendary cryptanalyst Alan Turing, the film portrays the nail-biting race against time by Turing and his brilliant team of code-breakers at Britain's top-secret Government Code and Cypher School at Bletchley Park, during the darkest days of World War II.
Alan Turing

Joan Clarke

Hugh Alexander

Detective Robert Nock

John Cairncross

Peter Hilton

Commander Denniston

Stewart Menzies

Jack Good

Sergeant Staehl

Superintendent Smith

Keith Furman

Charles Richards

Young Alan Turing

Christopher Morcom

Helen

Sherborne Student 1

Sherborne Student 2

Sherborne Student 3
Joan's Father

Joan's Mother

Teacher

Headmaster
MI6 Agent

Military Policeman

Margaret
Electrical Assistant

Woman in Crowd (uncredited)
Ministry Man (uncredited)

Wren (uncredited)

Dancer (uncredited)
Assistant Wren (uncredited)

Crossword Man in Pub (uncredited)
MI6 Agent (uncredited)

Joan Clarke's Friend (uncredited)
Bletchley Park Agent (uncredited)

Passerby (uncredited)
Military Policeman 3 (uncredited)
Civilian (uncredited)

Evacuee (uncredited)

Bletchley Park Operative (uncredited)

MI6 Agent (uncredited)
Police Sergeant White (uncredited)

Crossword Man (uncredited)

First Aid Nurse (uncredited)
German Pilot (uncredited)
German Spy Plane Pilot (uncredited)