The Spiral Staircase

A murderer is targeting disabled young women in a sleepy New England town, and Helen (Dorothy McGuire), a mute servant in a Gothic mansion, is terrified she's next! Mrs. Warren (Ethel Barrymore), the invalid, bullying mistress of the house, warns Helen to leave at once, rather than rely on her weak son and stepson for protection. But even as Helen is packing her things, she suspects she may be too late and the murderer is closer than she ever imagined! (official distributor synopsis)