The trailer for Son of Frankenstein.
The story begins with Wolf Frankenstein (Basil Rathbone), the adult son of the monster's creator, relocating his wife and young son to the Frankenstein estate in the village that bears the family name. Wolf's desire to recast his father's reputation is strengthened to obsession by what he believes to be unfounded hostility from the villagers, memories of the monster being still too fresh in people's minds. Aside from his family, Wolf's only friend is the local police Inspector Krogh (Lionel Atwill), one of whose arms is now wooden as a result of being torn off by the monster (a scene which was not featured in the previous movies).
With the help of demented blacksmith Ygor (Béla Lugosi), Wolf finds the monster's ailing carcass, and he imagines rehabilitation of the creature to be the perfect means by which to restore the family's honor. When he heals the monster (Boris Karloff), but only to consciousness, Wolf discovers that its horrible legend is a reality, but his residual denial prolongs the search for the monster and its eventual destruction about kidnapping Wolf's little boy. By the film's end, Wolf has realized his role as a father is more important than his role as a son.