The Sleeper is a 2012 horror film written and directed by Justin Russell.
On the day of the party, the Sleeper sneaks into the sorority, kills Cindy by bashing her face in with a hammer, and hides her body. By the next day, the girls find Cindy missing and so does Bobby. Later that night the Sleeper strikes again, ripping Rebeccas face off using the claw of his hammer in a gyms locker room. He then moves on to killing Stacy, her suitor Derek, and an employee at a pool hall. As these homicides occur, Cindys boyfriend Bobby goes to the police to report Cindys disappearance, and he and Detective Drake learn that Rebecca and Stacy have gone missing after the detective calls the sorority. Drake sends Bobby home, and goes to the sorority while the Sleeper kills Matt, a boy who had walked Alpha Gamma Theta pledge Amy to her dormitory.Amy discovers she has been left a message by the Sleeper just before Drake calls to ask her if she has seen any of the missing coeds. Drake advises Amy to come to the Alpha Gamma Theta house where they are setting up a phone tap when she tells him about the message she had received. The Sleepers calls are traced to an old storm cellar in Jacobs Hall, so Drake heads there. Two officers are left to watch the house, but the Sleeper manages to get inside, and kills everyone in the building including Bobby when he drops by besides Amy. The Sleeper wounds Drake when he returns, chases Amy through the campus, and to his lair, where Amy stabs him. ........
Source: Wikipedia