In the beginning of the Twentieth Century, a serial-killer is terrorizing a small town, killing women with imperfections. In the Warren manor, the mute servant Helen nurses Mrs. Warren who is terminal in bed. The newcomer Dr. Parry falls in love for Helen and has the intention to take her to specialists in Boston for treatment for recovering her voice and marry her. When the reckless Steve Warren arrives from Europe, he stays in the mansion with his mother and his stepbrother Professor Albert Warren and has a brief affair with Albert's assistant Blanche. When a crippled woman is killed in the town, Mrs. Warren advises Helen to leave the house immediately since she is in danger. When a murder occurs in the mansion, Helen does not know who is trustful to help her to call Dr. Parry to rescue her.