For the sake of your sanity, pray it isn't true!
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 or 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.
Pamela Franklin
Florence Tanner
Roddy McDowall
Benjamin Franklin Fischer
Clive Revill
Dr. Lionel Barrett
Gayle Hunnicutt
Ann Barrett
Roland Culver
Mr. Rudolph Deutsch
Peter Bowles
Hanley
Michael Gough
Emeric Belasco (uncredited)
