A Texan with a secret past (Gene Hackman) searches Europe with his son (Matt Dillon) after the KGB kidnaps his wife (Gayle Hunnicutt).

A team consisting of a physicist, his wife, a young female psychic and the only survivor of the previous visit are sent to the notorious Hell House to prove/disprove survival after death. Previous visitors have either been killed or gone mad, and it is up to the team to survive a full week in isolation, and solve the mystery of the Hell House.