A wealthy lord dies and is entombed with a valuable deposit of jewels. Seven keys are required to unlock the tomb and get hold of the treasure. A mad doctor uses an iron maiden to systematically eliminate the heirs to the fortune.
as Dr. Manetta
as June Lansdowne
as Ann Cody
as Glenda Baker
as Edward Havelock
as Dick Martin
as Inspector Cornelius 'Andy' Sneed
as Luis Silva
as Lord Charles Francis Selford
as Bevan Cody
as Tom Cawler
as Chief Commissioner
as John Selford
as P.C. in Sneed's Office (Uncredited)
as Handwriting Expert (Uncredited)
as Chief Commissioner (Uncredited)
