'Looper' trailer: Joseph Gordon-Levitt hunts future self Bruce Willis Published Thursday, Apr 12 2012, 7:14pm EDT | By Tara Fowler (DIGITAL SPY)

he first trailer for Looper has premiered online. The sci-fi, which stars Joseph Gordon-Levitt, Bruce Willis and Emily Blunt, tells the story of a killer who discovers that one of his targets is his future self.

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