America's British boyfriend Benedict Cumberbatch stars as famed mathematician Alan Turing in this real-life biopic about Turing's efforts to decipher the infamous German Enigma code during World War II. The film is very tasteful and "Masterpiece Theatre"-ish. But Turing's story of professional triumph and personal tragedy is terribly compelling stuff. Based on the book by Andrew Hodges. 114 minutes PG-13.