Norman Taylor is a successful young professor, married with Tansy Taylor. He is a very skeptical man, while his wife believes in magic and witchcraft. One day, he finds lots of amulets and witchcraf...

　　American psychologist John Holden arrives in London to participate in a symposium aiming to expose witchcraft and devil-worship as a fraud, with attention centered on a cult run by a Julian Karswell...