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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The Door with Seven Locks is a 1940 British horror film directed by Norman Lee and starring Leslie Banks and Lili Palmer. The screenplay was by John Argyle, Gilbert Gunn and Norman Lee based on the 1926 novel The Door with Seven Locks by Edgar Wallace. Released in the United States by Monogram Pictures under the title Chamber of Horrors, it was the second Wallace film adaptation to arrive in the United States, the first being The Dark Eyes of London, starring Béla Lugosi, which had been released the year before.
