psychological horror

A wealthy New York investment banking executive hides his alternate psychopathic ego from his co-workers and friends as he escalates deeper into his illogical, gratuitous fantasies.

Two psychotic young men take a mother, father, and son hostage in their vacation cabin and force them to play sadistic "games" with one another for their own amusement.

A police psychologist suspects her former lover of serial murders on the Tokyo subway.