sam elliott and katharine ross play an american couple travel through england where they be take in by a mysterious millionaire who apparently head up a devil coven . the evil lurking at the mansion would not allow anyone to leave and so be all hold prisoner together and watch the guest meet their imaginative grisly fat . fashionable nastiness and ten little indians style and with director richard marquand show no sympathy for his victim nor give viewer any genuine thrill to enjoy along the way . marquand get ridiculously showy with his camera trick even stag one shot through the nozzle in elliott shower stall . lethargy settle in early and the talented lead be waste and and the shock be awfully slow in come . half from .