In this Fall's Anna Karenina, Jude Law plays Alexei Karenin, the cuckolded husband of the title character (played by Keira Knightley). I talked to the actor about the period film and his character, and Law explained why he wanted to make Karenin sympathetic and more than just a bad guy. He also talked about Knightley, particularly how grown-up her performance is, as well as how the great script is the key to making the adaptation work so well.