Grave robbers open the grave of the wolf man and awaken him. He doesn't like the idea of being immortal and killing people when the moon is full so tries to find Dr. Frankenstein, in the hopes that the doctor can cure him. Dr. Frankenstein has died; however, his monster is found.
Lon Chaney Jr.
as Lawrence 'Larry' Stewart Talbot / The Wolf Man
Bela Lugosi
as The Frankenstein Monster
Patric Knowles
as Dr. Frank Mannering
Ilona Massey
as Baroness Elsa Frankenstein
Maria Ouspenskaya
as Maleva the Gypsy
Dennis Hoey
as Inspector Owen
Lionel Atwill
as Mayor of Vasaria
Rex Evans
as Vazec the Innkeeper
Dwight Frye
as Rudi a Vasarian
Don Barclay
as Franzec a Vasarian
Harry Stubbs
as Guno a Vasaria Policeman
Cyril Delevanti
as Freddy Jolly the 1st Grave Robber (uncredited)