Helen Capel is a beautiful young girl who has not uttered a word since childhood. She works as a servant for old, ailing Mrs Warren in the Warren family mansion. When a sinister spate of murders involving 'women with afflictions' hits the neighbourhood, Helen believes she's the next victim. One night, a storm breaks and Helen realises the killer is in the house with her. Unable to scream for help, what can she do to save herself? And just who is the psychotic killer?