Back in 1916, amazing young mute Helen can be just a domestic worker for elderly, ailing Mrs. Warren. Mrs. Warren's two adult sons, Albert (a professor) and womanizing impudent Steven, also reside in the Warren mansion. Mrs. Warren becomes worried about Helen's safety as a rash of murders involving'women with afflictions' strikes the neighborhood. She implores her physician, Dr. Parry, to shoot Helen off for her own safety. It will become obvious that Helen is at danger when a murder occurs inside the Warren mansion.