Boris Karloff stars in the role that made him a screen legend in this, the second sequel to the famous horror classic. The son of Dr. Frankenstein returns to the ancestral family castle 25 years after the explosive death of the monster. There he meets Ygor (Bela Lugosi), a mad shepherd who is hiding the comatose body of the creature. Hoping to clear the family name, the young Dr. Frankenstein (Basil Rathbone) revives the creature and attempts to rehabilitate him. But his noble goals are circumvented when Ygor sends the creature on a killing spree that spreads a new panic in the village. Praised by critics as one of the best of the Frankenstein series, Son of Frankenstein is a worthy heir to the landmark original.