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.

Benedict Cumberbatchas Alan Turing
Keira Knightleyas Joan Clarke
Matthew Goodeas Hugh Alexander
Rory Kinnearas Detective Robert Nock
Allen Leechas John Cairncross
Matthew Beardas Peter Hilton
Charles Danceas Commander Denniston
Mark Strongas Stewart Menzies
James Northcoteas Jack Good
Tom Goodman-Hillas Sergeant Staehl
Óscar Faura