The Imitation Game is set in England during WWII. It is based on the biography Alan Turing: The Enigma. Benedict Cumberbatch plays Turing, who was a gifted mathematician and cracked the Nazi's Enigma code, thus helping the Allies win the war. Kiera Knightley plays Joan Clarke, another code breaker who worked with Turing at Bletchley Park during the war. It was a very good movie - good story, well acted. I really liked it.