Koma (2004)

Jesse finds himself struggling to get his job back as the Paradise police chief, and he is forced to rely on his cop intuition to sort through a maze of misleading clues and hidden meanings as he attempts to solve a shocking and horrifying mob-related double homicide.

Bumbling private detective Chan Tam is enlisted by police pal Fung Chak to help in the investigation of a serial murder case. The victims a middle-aged man killed at home, a dead woman found in the trash dump, and a teenage girl slain in the park were all killed in grisly manners, but they didn't seem related to one another. With no clue to follow up on, Tam is decidedly at his wits' end.

Triad member Chicken is designated by Taiwan's San Luen Gang to marry Nanako, the daughter of the fifth generation leader of the Yamada Gang in Japan. Later, the leader of the triad group gets murdered. Actually, all the San Luen Gang members suspect Chicken attacked their leader Liu, in order to make a chance for him to rule the Gang and thus have adopted an extremely hostile attitude towards him.

Veteran detective Cham works with rookie cop Will to hunt down the city's serial killer. The investigation leads them to a lair littered with dismembered female limbs, and an ex-con who killed Cham's wife and child years ago...

A financial tycoon, once a triad member, tries to eradicate the drug market while an old accomplice aims to be Hong Kong's first drug lord.

A special crimes investigator forms an unlikely bond with a serial killer to bring down a global child sex trafficking syndicate.

Hong Kong's three notorious thieves who have never met one another before appear in the same restaurant. This leads to a rumour that they are joining forces to pull off something big before the Handover, though this is not something that any of them.

Living in the guilt of sacrificing his informant in a previous operation, Criminal Intelligence Inspector Don Lee is wary when his superior orders him to send another informant to spy on the criminal operations of Barbarian, a vicious gangster plotting a jewelry heist. He seeks ex-convict Ghost, who agrees to work for Don despite vowing to go straight since he's desperately in need of money to repay a debt and save his sister. Ghost's driving skills help him infiltrate Barbarian's gang and earn his trust, but by feeding information to Don and hooking up with Barbarian's girlfriend Dee, Ghost is pushing himself into a tight and deadly corner...

This time taking on the rival Tung Sing triad, who is attempting to usurp Hung Hing influence in Hong Kong by having Tung Sing member Crow frame Ho Nam for the murder of Hung Hing Chairman Chiang Tin Sang. On the plus side, Chicken finds a new love interest in Wasabi, the daughter of the comedic priest, Father Lethal Weapon Lam.

A career-long undercover Hong Kong cop is sent to Mainland China when his former protégé becomes the primary suspect in a murder.