It was followed by her appearance in Morten Tyldum's historical drama "The Imitation Game", a film based on the British mathematician Alan Turing (played by Benedict Cumberbatch). Knightley portrayed cryptanalyst and numismatist Joan Clarke, who decrypted German intelligence codes for the British government during World War II with Turing. "The Imitation Game" became a critical and commercial success grossing over $233.6 million.- </ref> For her performance, Knightley received her second Academy Award and BAFTA Award nominations, and third Golden Globe Award nomination, all for Best Actress in a Supporting Role. Though Lady Jean Forde, who worked with Clarke and Turing at that time felt Knightley was "too beautiful" to play Clarke and said "She was nothing like Keira". Knightley's sole release in 2015 was as part of the ensemble cast in the biographical disaster film "Everest". The film was based on the 1996 Mount Everest disaster with Knightley portraying mountaineer Rob Hall's wife. "Everest" opened to mixed review from critics.