South Korean psychological thriller directed by Park Chan-Wook. What begins as a standard suicide case soon turns into something far more beguiling for insomniac detective Hae-jun (Park Hae-il) when he meets the elusive Chinese immigrant Seo-rae (Tang Wei). As the truth becomes harder to define, and more bodies turn up, Hae-jun is forced to question not only his own tenacity as a police officer, but also the essential values of his personal life.