Young Charles Dexter Ward is fascinated by the history of Joseph Curwen, his wizard ancestor of the 17th century. Curwen was notorious for haunting graveyards, practicing alchemy - and never aging! Ward can't help his fixation: he, himself, looks just like Curwen. In an attempt to duplicate his ancestor's cabbalistic feats, he resurrects the fearsome Curwen . . . and then the true horror begins!