When a beautiful student named Nancy Wagner (Sandra Dee) catches the eye of the weird Wilbur Whateley (Dean Stockwell), it's up to her professor, the good doctor and occult expert Dr. Henry Armitage (Ed Begley), to warn her that no good will come of it. But as Armitage digs deeper into the Whateley family history, he uncovers a buried secret – and a plot intended to call forth an evil beyond imagination. Daniel Haller directs this cult favorite.