In 1880, Sir Robert Cargrave, a London physician known for his experimental work in paralysis treatment, is summoned to Gorslava by the mysterious Baron Sardonicus—who is now married to Cargrave's former wife, Maude—to treat his disfigurement. When Cargrave arrives, he finds the masked baron is a cruel sadist who has threatened to harm Maude if he is not successfully cured.
Ronald Lewis
as Sir Robert Cargrave
Audrey Dalton
as Maude Sardonicus
Guy Rolfe
as Baron Sardonicus
Oskar Homolka
as Krull
Vladimir Sokoloff
as Henryk Toleslawski
Erika Peters
as Elenka
Lorna Hanson
as Anna
Constance Cavendish
as Mrs. Higgins (uncredited)
James Forrest
as Geoffery Wainwright (uncredited)
Tina Woodward
as The Girl (uncredited)
Mavis Neal Palmer
as Head Nurse (uncredited)
Charles H. Radilak
as Stationmaster (uncredited)
