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.

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.