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.
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Verdict: Unknown
> Norman Lee (Director)
> Ernest Palmer (Director of Photography)
> Alex Bryce (Director of Photography)
> Roy Parkinson (First Assistant Director)
> Guy Jones (Music Director)
> Edgar Wallace (Novel)
> Gilbert Gunn (Screenplay)
> Norman Lee (Screenplay)
