Yahoo! Movies! has debuted the first trailer for the upcoming thriller The Roommate, which arrives in theaters nationwide on February 1, 2011. Click on the video player below for your first look at this harrowing tale starring Gossip Girl's Leighton Meester as an insane college coed out to torment her new dorm roommate (Minka Kelly):

The Roommate centers on Sara (Minka Kelly), a college student randomly assigned to a freshman dorm with a stranger named Rebecca (Leighton Meester). They start off as friends but things turn deadly as Rebecca begins to target people in Sara's life.