Reports confirm that Keira Knightley is set to star opposite Benedict Cumberbatch in director Morten Tyldum's (Headhunters) The Imitation Game.  The indie drama about the brilliant British mathematician and cryptographer Alan Turing will center on his breaking of the German enigma code at the end of World War II, his prosecution by his own government for being a homosexual and his resulting suicide.  With Cumberbatch in the lead role, Knightley would play "a woman from a very conservative background who not only forms a complicated relationship with Turing but is there for him until the end," according to THR.