Stream the full Infernal Affairs Season 1 Episode 4 movie online for free in crystal-clear HD quality. No downloads required—just press play and enjoy the action, complete with English subtitles for an enhanced viewing experience.
Infernal Affairs: Jiang Zi Dan, a Chinese police officer, is sent to Hong Kong to go undercover as a triad member. The same triad sends Wei Jun Xuan as an informant into the police force, to finish what his predecessor had failed to do.