Jessica Burns (Carolyn Kearney), a young woman who claims to have psychic powers, lives on a remote dude ranch with her Aunt Flavia (Peggy Converse). An ancient box is discovered while digging a well discovered by Jessica while dowsing. Against Jessica's warnings, her Aunt takes it back to their house. Gordon (William Reynolds (actor)), a young man who has shown interest in Jessica, goes for an archaeologist, arguing the box should be kept intact for appraisal and opening by an expert. However, the Aunt's greedy ranch foreman, anticipating treasure, secretly convinces the slow-witted handyman to break it open. Instead, the box contains the intact head of Gideon Drew (Robin Hughes), a man executed for sorcery 400 years earlier. The head awakens and telepathically takes over the mentally vulnerable handyman.