![Double Door](https://image.chilimovie.com/region2/en/300px/20240227/47pnQENUOsh1dE8FPru9c1IfRoR.jpg)
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A domineering money-bags' suppressed incestuous urges go into overdrive when her half-brother brings a new bride home to the family’s gloomy Fifth Avenue mansion. The title refers to a secret soundproofed chamber that the villainess uses to entrap her enemies.