The Ghost Of Frankenstein
1942

The film is a sequel to "The Son of Frankenstein". After recent events involving the Frankenstein Monster, the villagers fear that they are under a curse. They decide to destroy Frankenstein's castle. Ygor, still alive, flees through the catacombs and finds the Monster partly encased in a sulphuric tomb. They escape into the countryside and encounter a thunderstorm. The Monster is struck by a bolt of lightning and instead of being harmed by it, is instead rejuvenated. Ygor decides to find Ludwig, Frankenstein's second son, to help the Monster.

Ludwig Frankenstein has a successful practice in Vasaria, which he runs with his assistants Kettering and Bohmer. Ygor and the Monster arrive in Vasaria and the Monster quickly gets into trouble with the police after he befriends a local girl.

Ygor goes to Ludwig to inform him that his father's creation has been captured by the police. He wants him to heal the Monster's body and mind. When Ludwig refuses, Ygor threatens to tell the authorities of his ancestry.

Later, the Monster escapes from the police, and Ygor leads him to Ludwig's residence. Ygor and the Monster break into Ludwig's laboratory and Dr. Kettering is killed. Finally, Ludwig sedates the Monster with knockout gas. He considers destroying the Monster once and for all.

While reading his father's journals, Ludwig is visited by the ghost of his father, who implores him to perfect his creation and thus correct his mistake, by giving the Monster a good brain.