Credit: Jack English/Focus Features

Opens: Friday 12/9

Us Rating: ***

One rule for seeing this thriller: Don't lose focus. Set during the Cold War, it follows a U.K. intelligence officer (Gary Oldman) as he smokes out a mole working for the Soviet Union. While it's a challenge to track the twists and myriad characters (Benedict Cumberbatch stands out as a fellow agent), the film culminates in a gratifying gotcha moment.