Secret Beyond the Door (1947) runs 1 h 39 min, is rated NR in the US and averages 6.5 from 168 TMDB members. After a whirlwind romance in Mexico, a beautiful heiress marries a man she barely knows with hardly a second thought. She finds his New York home full of his strange relations, and macabre rooms that are replicas of famous murder sites. One locked room contains the secret to her husband's obsession, and the truth about what happened to his first wife.
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Streaming availability by JustWatch. As of 2026-11-06 it is not streaming on a subscription or free service in the US; it can be rented or bought on Amazon Video, Apple TV Store, Google Play Movies.
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