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.
Evelyn Venable
as Anne Darrow
Mary Morris
as Victoria Van Brett
Anne Revere
as Caroline Van Brett
Kent Taylor
as Rip Van Brett
Guy Standing
as Mortimer Neff
Colin Tapley
as Dr. John Lucas
Virginia Howell
as Avery
Halliwell Hobbes
as Mr. Chase
Frank Dawson
as Telson
Helen Shipman
as Louise
Leonard Carey
as William
Burr Caruth
as
