Oscar nominee Keira Knightley and Mad Men Emmy nominee Elisabeth Moss are ready to hit the stage in the West End revival of Lillian Hellman's chilling drama The Children's Hour. Take a look as the beautiful and talented actresses go head to head in this promotional shot for the production about two teachers caught in a web of lies. The Children's Hour, directed by Ian Rickson, begins performances on January 22, 2011 and opens on February 9 at London's Comedy Theatre.