Infernal Affairs II (2003)7.2 /10

Storyline:  Set before the events of the first film, Chan Wing Yan, expelled from the police academy due to his triad ties, is recruited by SP Wong to infiltrate a crime family led by his half-brother Hau. Meanwhile, Lau Kin Ming rises within the police under triad orders. A violent struggle unfolds as personal loyalties and criminal power plays intertwine during the 1997 Hong Kong handover.