An obsessed scientist conducts profane experiments in evolution, eventually establishing himself as the self-styled demigod to a race of mutated, half-human abominations.

An evil scientist and a hunchback escape from prison and encounter Dracula, the Wolf Man and Frankenstein's Monster.

Ygor discovers Frankenstein's creation is still alive and brings him to the Doctor's son, Ludwig, for help. Obsessed with restoring the monster to his full potential, Ludwig is unaware that someone has more devious plans for the creature.

A pair of bus drivers accidentally steal their own bus. With the company issuing a warrant for their arrest, they tag along with a playboy on a boat trip that finds them on a tropical island, where a jewel thief has sinister plans for them.

A scientist working on cures for rare afflictions, such as a bone softening agent made from molds to allow him to correct the spinal deformity of his nurse, finds the physical causes of lycanthropy in wolf-man Larry Talbot and of vampirism in Count Dracula, but himself becomes afflicted with homicidal madness while exchanging blood wit...