A biography of the English mathematician Alan Turing, who was one of the inventors of the digital computer and one of the key figures in the breaking of the Enigma code, used by the Germans to send secret orders to their U-boats in World War II. Turing was also a homosexual in Britain at a time when this was illegal, besides being a security risk.
Derek Jacobi
as Alan Turing
Alun Armstrong
as Mick Ross
Blake Ritson
as Christopher Morcom
Prunella Scales
as Sara Turing
Harold Pinter
as John Smith
Julian Kerridge
as Ron Miller
Richard Johnson
as Dilwyn 'Dilly' Knox
Amanda Root
as Patricia 'Pat' Green
William Mannering
as Young Alan Turing
