Zavvi Exclusive Limited Edition Steelbook.

The Imitation Game is a gripping, acclaimed thriller that tells the incredible true story of unsung war hero Alan Turing, the British mathematician responsible for cracking the German Enigma code during World War II. Benedict Cumberbatch (The Fifth Estate, Star Trek Into Darkness, and TV's Sherlock) and Keira Knightley (BAFTA nominee for Atonement, Oscar® nominee for Pride and Prejudice) star as Turing and his ally and fellow code-breaker Joan Clarke, alongside a top-notch cast, including Matthew Goode (Stoker, A Single Man), Mark Strong (Tinker Tailor Soldier Spy), Rory Kinnear (Skyfall), Charles Dance (Gosford Park, TV's Game of Thrones), Allen Leech (In Fear, TV's Downton Abbey) and Matthew Beard (An Education).