and inside, jason se dekis and charlie day are in the social square.. >> thank you so much. and i'm here with oscar-nominated actress keira knight lee. she's in the imitation game, mat me tigss who break an unbreakable nazi code and save thousands of lives. she's joan clark, the only woman in the group, getting rave reviews from critics. here's the moment she earns her spot. take a look. >> you finished. >> yes. >> five minutes and 34 seconds. >> you said to do it in under six. >> love a smart woman. keira knightly, thank you for joining me. how great was it to play joan clark, a woman who hlds her own. >> there was a woman in the 1940s at the center of breaking enigma code. one of the major breakthroughs in the second world war. astonishing. >> you just won a hollywood film award for your portrayal of joan clark. >> i did. that's exciting. >> there's an emphasis for women, young girls, especially, to get involved in s.t.e.m., science, technology, engineering and math. what can they learn from your character? >> just tooz it. it is shocking how few wom