You're sitting in a dark theater. You're enjoying the latest Hollywood blockbuster. Suddenly, in the background of a scene, you spot an extra that is your exact double...What do you do? Travel across the country to track him down, of course! That's exactly what Jake Gyllenhaal does in the upcoming drama An Enemy, from director Denis Villeneuve. The actor was recently spotted in Scottsdale, Arizona, filming this movie based on a novel by José Saramago, with a cast that also includes Mélanie Laurent, Mélanie Laurent, and Mélanie Laurent. Take a look as Jake Gyllenhaal prepares to confront his doppelganger in An Enemy!