Cold Prey III (2010)

Set in 1976, the film finds the Stehoe mountain hotel on the brink of bankruptcy after several suspicious and bizarre events. Unsure that their son has nothing to do with the inexplicable events, the young couple running the hotel take the desperate and brutal step of keeping him locked in the basement. But one day something happens to shake the family forever. The official story is that the boy fell into a crevasse while he was out playing, and that the parents were taken by avalanche while they were looking for him. But what is the truth?