A family moves into a large old mansion in the countryside which seems to have a mysterious and sinister power over its new residents.
| Actor | Role |
|---|---|
 Karen BlackMarian Rolf | Marian Rolf |
 Oliver ReedBen Rolf | Ben Rolf |
 Burgess MeredithArnold Allardyce | Arnold Allardyce |
 Bette DavisAunt Elizabeth | Aunt Elizabeth |
 Eileen HeckartRoz Allardyce | Roz Allardyce |
 Lee MontgomeryDavid 'Davey' Rolf | David 'Davey' Rolf |
 Dub TaylorWalker | Walker |
| JJoseph RileyBen's Father | Ben's Father |
| TTodd TurquandYoung Ben | Young Ben |
| OOrin CannonMinister | Minister |
| JJim MyersDr. Ross | Dr. Ross |
 Anthony JamesThe Chauffeur | The Chauffeur |
| GGarrett CassellRocker (uncredited) | Rocker (uncredited) |