Dementia (also known in a slightly altered version as Daughter of Horror) is an American film by John Parker, incorporating elements of the horror film, film noir and expressionist film.

Plot:
A young woman awakens from a nightmare in a run down hotel. She leaves the lodging and wanders into the night. She encounters a dwarf hawking newspapers with the bold headline “Mysterious stabbing.” She smiles enigmatically and quickly walks on. In a dark alley, a wino approaches and grabs her. A policeman rescues her and beats up the drunken man as she leaves. Along her way, a pimp, sharply dressed with a pencil-thin mustache, approaches her and cajoles her into escorting a porcine rich man in a chauffeured limousine. As they cruise the through the night, she thinks back to her tragic youth and her abusive father. She had stabbed him to death with a switchblade after he shot and killed her unfaithful mother.