Dr. Frankenstein and his monster both turn out to be alive, not killed as previously believed. Dr. Frankenstein wants to get out of the evil experiment business, but when a mad scientist, Dr. Pretorius, kidnaps his wife, Dr. Frankenstein agrees to help him create a new creature.
Boris Karloff
as The Monster
Colin Clive
as Henry Frankenstein
Valerie Hobson
as Elizabeth
Ernest Thesiger
as Doctor Pretorius
Elsa Lanchester
as Mary Wollstonecraft Shelley / The Monster's Mate
Gavin Gordon
as Lord Byron
Douglas Walton
as Percy Bysshe Shelley
Una O'Connor
as Minnie
E. E. Clive
as Burgomaster
Lucien Prival
as Butler
O. P. Heggie
as Hermit
Dwight Frye
as Karl
