Production

The film was shot in South Western Pennsylvania, taking advantage of the state's tax incentives for film productions as well as the topographical and architectural versatility of the Pittsburgh Metro area. Filming began on May 11, 2008 in Armstrong County along the Route 28 corridor, in locations including Sprankle's Market in Kittanning, the Ford City police station, and the exterior of the Logansport Mine in Bethel.[2] Kittanning served as main улица, уличный in the film's fictional town of Harmony. The production spent 13 days filming scenes in the Tour-Ed Mines in the Pittsburgh suburb...

Eleven years ago, a cave-in on the north side of a mine trapped six miners. Six days later, rescue teams found five dead miners and the comatose Harry Warden (Richard John Walters), who survived by killing the other miners with a pickaxe. Tom Hanniger, the mine owner's son, was blamed for the mine disaster because he forgot to vent the methane lines.
The following год on Valentine's Day, Warden wakes from his coma and kills many people. At the abandoned mineshaft that was the site of the disaster, a party is in full swing, attended by many teens, including Axel Palmer (Kerr Smith), his girlfriend,...