south korea   serial killer   police chief   false accusation   red dress   surveillance   corrupt cop   dark humor   based on true story   product placement   black humor   clue   female victim   multiple suspects   footprint   unsolved crime   police surveillance   murder suspect   forensic evidence   based on play   political scandal   country vs city cultures   faked evidence   police protection failure   rumor   serial rape   webbed fingers   forced confession   false arrest   murder investigation   death   mysterious death   murder   rain   mental retardation