Keira Knightley's 'The Imitation Game' co-stars call her 'brilliant' and 'level-headed'

British actor Matthew Goode, who was last seen in 'The Imitation Game' along with Benedict Cumberbatch and Keira Knightley, has said that the actress is a down to earth and level headed person.

The 36-year-old actor said in an interview of the upcoming DVD and Blu-ray editions of the 'The Imitation Game', that the 29-year-old actress had a good sense of humor, and he felt like he had a sister on the set, E! Online reported.

Benedict Cumberbatch said that this was the actress' best work so far, and she was really brilliant.

Another co-star of the thriller movie, Allen Leech added that Knightley didn't had any problem being the only female star of the movie, as she knew how to control the group of lads and get over them said.