Preview: Keira Knightley on double standards women face in work

In Knightley's latest movie, "The Imitation Game," she plays a mathematician Joan Clarke who was recruited by British cryptologist Alan Turing during World War II. She shares with co-host Norah O'Donnell how women today may still be able to relate to her character. Tune in Tuesday to watch the full story on "CBS This Morning."

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