In "The Return of Doctor X," a mad doctor is resurrected and begins performing gruesome experiments. A reporter and a police lieutenant investigate the mysterious occurrences, leading them to a series of murders and a secret reanimation process. The town is in jeopardy as the doctor's experiments become increasingly dangerous.

In Doctor X, a mad scientist in New York City is suspected to be behind a series of gruesome murders. A reporter and a doctor from a research institute investigate the case, leading them to a dark laboratory filled with synthetic flesh and cannibalism. As the investigation unfolds, they uncover the dark secrets of the doctor's experiments and the horrifying truth behind the murders.