When the son of Dr. Frankenstein returns to the ancestral family castle 25 years after the death of the monster, he meets Ygor, a mad shepherd who is hiding the comatose body of the creature. Hoping to clear the family name, the young Frankenstein revives the creature and attempts to rehabilitate him, but his noble goals are circumvented when Ygor sends the creature on a killing spree. © 1939 Universal Studios. All Rights Reserved.