is a 2006 Japanese horror-mystery film written and directed by Kiyoshi Kurosawa, and starring Kōji Yakusho as a detective whose investigation of serial murders leads him to a mysterious woman in red that slowly draws him into the darkness.

Plot

Yoshioka, an experienced detective, investigates the murder of an unknown woman in a red dress. She was drowned on the Tokyo waterfront, but an autopsy reveals that her stomach is full of seawater. Moreover, all the clues that he finds relate to himself: a button found at the murder scene matches one that is missing from his own coat, and fingerprints found match his own. Yoshioka realizes that the only viable suspect is himself, but he does not remember a thing.