Frankenstein (1931) with Boris Karloff.

Frankenstein is a 1931 American horror film directed by James Whale and produced by Carl Laemmle Jr.
It is adapted from the 1927 play Frankenstein: An Adventure in the Macabre by Peggy Webling, which in turn was based on Mary Shelley's 1818 novel Frankenstein; or, The Modern Prometheus. The Webling play was adapted by John L. Balderston, while the screenplay was written by Garrett Fort and Francis Edward Faragoh, with uncredited contributions from Robert Florey and John Russell.

Frankenstein stars Colin Clive as Henry Frankenstein, an obsessed scientist who digs up corpses with his assistant to assemble a living being from body parts. The resulting creature, often known as Frankenstein's monster, is portrayed by Boris Karloff. The makeup for the monster was provided by Jack Pierce. Alongside Clive and Karloff, the film's cast also includes Mae Clarke, John Boles, Dwight Frye, and Edward Van Sloan.

Plot :
In a village in the Bavarian Alps, scientist Henry Frankenstein and his hunchbacked assistant Fritz piece together a human body. Some of the parts are from freshly buried bodies, others from recently hanged criminals. Henry desires to create a human, giving this body life through electrical devices. He still needs a brain for his creation. Henry's former teacher Dr. Waldman shows his class the brain of an average human being and the corrupted brain of a criminal for comparison. Henry sends Fritz to steal the healthy brain from Waldman's class. Fritz accidentally damages it, and so brings Henry the criminal brain.

Henry's fiancée Elizabeth Lavenza speaks with their friend Victor about the scientist's peculiar actions and his seclusion. Elizabeth and Victor ask Waldman for help understanding Henry's behavior, and Waldman reveals he is aware Henry wishes to create life. Concerned for Henry, they arrive at his lab just as he makes his final preparations, the lifeless body on an operating table. As a storm rages, Henry invites Elizabeth and the others to watch. Henry and Fritz raise the operating table toward an opening at the top of the tower. The creature and Henry's equipment are exposed to the lightning storm and empowered, bringing the creature to life. Henry is ecstatic at the sight of the creature moving and has to be restrained by Victor and Waldman. Henry proclaims he now knows what it feels like to be God.

Frankenstein's Monster, despite its grotesque form, seems to be an innocent, childlike creation. Henry welcomes it into his laboratory and asks it to sit. He opens up the roof, causing the Monster to reach out towards the sunlight. Fritz enters with a flaming torch, which frightens the Monster. Its fright is mistaken by Henry and Waldman for an attempt to attack them, and it is chained in the dungeon, where Fritz antagonizes it with a torch. Hearing Fritz screaming in the dungeon, Henry and Waldman find that the Monster has hanged Fritz. The Monster lunges at the two but they lock it inside. Realizing the Monster must be destroyed, Henry prepares an injection of a powerful drug and Waldman injects the drug into the Monster's back, rendering it unconscious.

Henry collapses from exhaustion, and Elizabeth and Henry's father take him home. There, he eventually recovers and prepares for his wedding, while Waldman examines the Monster. As he prepares to vivisect it, the Monster revives and strangles him. It escapes from the tower and wanders through the landscape, encountering a farmer's child, Maria. She asks him to play a game with her in which they toss flowers onto a lake. The Monster enjoys the game, but when he runs out of flowers, he throws Maria into the lake, inadvertently drowning her.

With preparations for the wedding completed, Henry is happy with Elizabeth. They are to marry as soon as Waldman arrives. Victor rushes in, saying that Waldman has been found strangled. Henry suspects the Monster. The Monster enters Elizabeth's room, causing her to scream. When the searchers arrive, they find Elizabeth in shock, then unconscious. The Monster has escaped.

Maria's father arrives, carrying his drowned daughter's body. He says she was murdered, and the villagers form a lynch mob to capture the Monster. During the search, Henry is attacked by the Monster. The Monster knocks Henry unconscious and carries him to an old windmill. The peasants hear the creature carrying Henry and find it climbing to the top, dragging Henry with it. The Monster hurls the scientist to the ground. His fall is broken by the wooden blades of the windmill, saving his life. Some of the villagers bring him home while the rest of the mob set the windmill ablaze, with the Monster trapped inside.

At Castle Frankenstein, Henry's father celebrates the wedding of his recovered son with a toast to a future grandchild.