The Cast of 'The Roommate'

Spider pays a visit with the stars of Sony's new thriller and learns a bit about unhealthy obsessions, including Leighton Meester and Minka Kelly's unexpected musical crushes, and Cam Gigandet's scarier Twi-Hard encounters.'The Roommate' is a psychological thriller about a deranged college freshman (Leighton Meester) who becomes obsessed with her new roommate (Minka Kelly). In theaters February 4.