The wicked Alain plots an elaborate revenge against his younger brother Edmund, leading to a deadly confrontation in his dungeon deathtrap.

Charles Laughton
as Sire Alain de Maletroit

Boris Karloff
as Voltan

Sally Forrest
as Blanche de Maletroit

Richard Wyler
as Denis de Beaulieu

William Cottrell
as Corbeau

Alan Napier
as Count Grassin

Morgan Farley
as Renville

Paul Cavanagh
as Edmond de Maletroit

Michael Pate
as Talon

Marion Gray
as