Son of Frankenstein

Son of Frankenstein 1939 is a horror monster film and is the third film in Universal Studios Frankenstein series and the last to feature Boris Karloff as the Monster as well as the first to feature Bela Lugosi as Ygor. The picture is a sequel to James Whales Bride of Frankenstein directed by Rowland V. Lee and starring Basil Rathbone, Boris Karloff and Bla Lugosi.

Years after the events of the last film Baron Wolf von Frankenstein Basil Rathbone, son of Henry Frankenstein creator of the Monster, relocates his wife Elsa Josephine Hutchinson and their young son Peter Donnie Dunagan to the family castle in the eponymous village. Wolf wants to redeem his fathers reputation, but finds that such a feat will be harder than he thought after he encounters hostility from the villagers. Aside from his family, Wolfs only friend is the local policeman Inspector Krogh Lionel Atwill who bears an artificial arm, his real arm having been ripped out by the roots in an encounter with the Monster as a child.While investigating his fathers castle, Wolf ends up meeting Ygor Bla Lugosi, a demented blacksmith who has survived a hanging for graverobbing and has a deformed neck as a result. Wolf finds the Monsters comatose body in the crypt where his grandfather and father were buried with the chalk writing on his stone casket stating Henrich von Frankenstein Maker of Monsters. He decides to revive it to prove his father was right and to restore honor to his family. Wolf starts out by using the torch to etch out the word Monsters on the casket and write Men in its place. When the Monster Boris Karloff is revived, it only answers Ygors wishes and commits a series of murders at his command the victims were all jurors at Ygors trial. Wolf discovers this and confronts Ygor. Wolf ends up shooting Ygor, and apparently killing him. The Monster finds Ygors body and abducts Wolfs son as revenge. The Monster cannot bring himself to kill the child, however. When the abduction is discovered, Krogh and Wolf pursue the Monster to the nearby laboratory, where a struggle ensues, during which the Monster tears out Kroghs false arm. Wolf swings on a rope and knocks the Monster into a molten sulphur pit under the laboratory, saving his son. ........

Source: Wikipedia