The Miner
Sarah hides in Axel's cabin. There she discovers evidence of Axel's affair and a tower of empty valentine gift boxes. The Miner appears and chases her into the mine. She is hiding in the mine when Axel arrives, and Sarah grabs his gun. Tom shows up, and Sarah holds the two men at gunpoint as they each accuse the other of being the killer. Tom, however, mentions the way Megan was killed, inadvertently revealing he is the killer. As Sarah points the gun at him, Tom hallucinates, revealing the Miner is his split personality. A flashback shows him digging up Warden's mining gear and committing the murders. After a struggle, Sarah shoots Tom, and the bullet strikes a fuel tank, which explodes. Sarah and Axel are rescued from the resulting cave-in. Tom also survives, murdering the rescue worker who finds him and escaping in the worker's gear.