In 1916, Helen, a stunning young mute, works as a domestic servant for Mrs. Warren and her two sons, Albert and Steven, in their mansion. As a series of murders targeting women with disabilities plagues the neighborhood, Mrs. Warren grows worried for Helen's safety and begs Dr. Parry to take her away. But when another murder takes place within the mansion, it becomes clear that Helen is in grave danger.

The Spiral Staircase
A chilling tale unfolds in 1916 as a ruthless serial killer stalks and terrorizes women with disabilities, and Helen, a mute woman, must rely on her heightened senses to uncover the sinister truth lurking in the darkness of a stormy night.