Double Vision

Double Vision is a 2002 action horror film directed by Chen Kuo-fu. The plot is about an FBI agent working with a troubled Taiwanese cop to hunt for a serial killer who is embedding a mysterious black fungus in the brains of the victims. It was screened in the Un Certain Regard section at the 2002 Cannes Film Festival. Plot Police detective Huang Huo-tu, a Waisheng ren (Mainland Chinese) in Taiwan, has relegated himself to a mundane job as a Foreign Affairs Officer as self-punishment for blowing the whistle on corruption in the force, and his colleagues have turned their backs on him. His young daughter is left traumatized after being taken hostage in a gun battle, and his wife Ching-fang is filing for divorce. Huang is on the verge of a severe nervous breakdown. A series of bizarre deaths in Taipei baffle local investigators, including a Christian preacher of foreign nationality found disemboweled. The priest is involved in the Taiwan-US military trade, so FBI agent Kevin Richter is called in to help. Huang, who can speak English, is made his liaison. Kevin, the topmost serial killer expert in the field, was previously investigating a series of murders in US in which all victims appeared willing to die. The crime scenes imply the involvement of supernatural forces. In one case a businessman froze to death in his office in the middle of a heatwave; in another the mistress of a prominent official called the fire department and was later found burned to death - with no sign of a fire ever occurring in her apartment. Richter is skeptical but Huang, who is more receptive to supernatural possibilities, suggests they investigate a local cult. After consulting a scholar in Academia Sinica, Huang and Kevin find that the killings follows a form of Taoist belief that one must fulfill five types of suffering required to become a Xian, an immortal being. According to legend, having double pupils allows a person to see the sins of another. The scholar tells them that there is a legend of a person who had double pupils, he used his ability to send these sinners to hell, and subsequently acquired immortality through his actions.