In 1910 Manhattan, Victoria Van Brett, a bitter spinster heiress lives an isolated life with her sister Caroline. Her domineering urges go into overdrive when their half-brother Rip brings a new bride home to the family’s gloomy Fifth Avenue mansion, built by their late industrialist father. The title refers to a secret soundproofed chamber that the villainess uses to entrap her enemies.

After years of questioning why people fear him, Death takes on human form so he can mingle among the mortals and find an answer. However, events soon spiral out of control as he falls in love with the beautiful young Grazia, the only woman not afraid of him. As he falls in love with her, her father sees him for what he is and begs him to return to his duties. Death must decide whether or not to seek his own happiness or sacrifice it so that Grazia may live.

The pilots of a Royal Air Force squadron in World War I face not only physical but mental dangers in their struggle to survive while fighting the enemy.

Drummond manages to save a woman from jumping in front of his car but she runs away with his car. He traces her and she asks him to help her out of a dangerous situation.