Synopsis

Beneath a rock meticulously carved with strange symbols, Dr. Smith, Will, and the Robot unearthed an ancient harp. They soon found that playing a specific melody released a hidden passage, leading to another realm entirely. Upon entering this new place, Dr. Smith encountered a being who identified himself as the devil, convinced he resided in Hell itself. After Dr. Smith departed, the alien followed them back to their planet, causing considerable alarm. Judy, however, formed a bond with the crea