Prom Night
Three years ago, Donna Keppel (Brittany Snow) returned home to find her brother and father dead. She hid under the bed as Richard Fenton (Johnathon Schaech), her former teacher, killed her mother in front of her. Since that day, she has been in therapy and she tells her therapist (Ming Wen) about the recurring dream of that night.
Donna is now living with her aunt (Jessalyn Gilsig) and uncle (Linden Ashby), and is about to graduate from high school. She and her friends are getting ready to attend their senior prom that night. Donna's boyfriend, Bobby (Scott Porter), arrives at her house, along with her friends Lisa (Dana Davis), Claire (Jessica Stroup), and their boyfriends, Ronnie (Collins Pennie) and Michael (Kelly Blatz). They take a limousine to the prom.
At the town's police station, Detective Winn (Idris Elba), who imprisoned Fenton three years ago, learns that Fenton has escaped from prison and warns Donna's aunt and uncle. At the prom, Fenton arrives at the hotel disguised as Mr. Ramsey, and takes a room on Donna's floor and kills the maid to get the master key. On the dance floor, Claire has a fight with her boyfriend Michael and goes up to her room with Donna to calm down. After Donna leaves, Claire is alone and hears noises. She then sees Fenton, who proceeds to take Claire into a room, stabs her and kills her. When Claire doesn't return, Michael goes upstairs to see her. While in the room, Fenton hides, then kills Michael. Detective Winn arrives and warns the hotel staff to be on the alert. Fenton kills a hotel employee looking for the maid and takes his uniform.
Lisa and Ronnie head up to the room, Lisa bumps into Fenton in the elevator. While making out Lisa realizes that it was Fenton and runs off to warn Donna, but after taking the stairs she's caught by Fenton. She is chased down to the basement of the hotel where construction is taking place and she hides herself from Fenton, but after her boyfriend calls her name from the elevator, Fenton finds her and kills her.
Winn and his assistant Nash (James Ransone) find the body of a man named Mr. Ramsey in a car in the hotel parking lot. Winn goes up to the room and finds the maid's body. Knowing for sure that Fenton is in the building, Winn sounds the emergency alarm and has the entire hotel evacuated. Donna goes back to the room to retrieve her mother's shawl and runs into Fenton. Realizing Donna is still inside Winn races back up to the room. Donna escapes Fenton, and Winn discovers the body of the employee Fenton killed earlier. Winn realizes Fenton left the hotel in the employee's uniform.
Winn now races back to Donna's house and finds Detective Nash dead in his squad car. Inside Donna returns from the bathroom to find Bobby's throat has been slit. She sees a shadow out in the hall and she hides in her closet, thinking the shadow is Fenton's. The person in the hall is Det Winn and Fenton grabs Donna in the closet. Winn is about to open the closet but then hears a scream from Donna's aunt, from noticing the dead officer on the ground outside so Winn runs to her bedroom. Donna bites him on the hand and tries to escape out of the closet but trips on the floor. Fenton tries to hold her down but Donna continues to struggle and kick him. Winn runs in and shoots Fenton, killing him. Donna cries over Bobby's dead body and Winn tells her it's over.
