Classic British chiller stars Boris Karloff as a gifted hypnotist who develops a technique that allows him to control the experiences and sensations of others. Enlisting the help of a young test subject, he begins experimenting with the new method. But when Karloff's wife becomes consumed by manipulating the human guinea pig, the dark side of human nature is unleashed. With Catherine Lacey, Elizabeth Ercy, Ian Ogilvy. Widescreen (Enhanced); Soundtrack: English Dolby Digital mono.