At the beginning of the 20th century, a serial killer is terrorizing a small town, killing women with imperfections. In the Warren manor, mute housemaid Helen nurses Mrs. Warren who is terminal in bed. Newcomer Dr. Parry falls in love with Helen and intends to take her to specialists in Boston who could help her recover her voice, and he also intends to marry her. When reckless Steven 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 she can trust to help her call Dr. Parry to rescue her.—Claudio Carvalho, Rio de Janeiro, Brazil