Seen-it-all New York detective Frank Keller is unsettled - he has done twenty years on the force and could retire, and he hasn't come to terms with his wife leaving him for a colleague. Joining up with an officer from another part of town to investigate a series of murders linked by the lonely hearts columns he finds he is getting seriously and possibly dangerously involved with Helen, one of the main suspects.
Working in the shadow of an esteemed police veteran, brash Detective Ezekiel “Zeke” Banks and his rookie partner take charge of a grisly investigation into murders that are eerily reminiscent of the city’s gruesome past. Unwittingly entrapped in a deepening mystery, Zeke finds himself at the center of the killer’s morbid game.
Hard-edged cop John Kimble gets more than he bargained for when he goes undercover as a kindergarten teacher to get the goods on a brutal drug lord while at the same time protecting the man's young son. Pitted against a class of boisterous moppets whose antics try his patience and test his mettle, Kimble may have met his match … in more ways than one.
Four young officers of the Hong Kong Police are joined together to fight against organised crime using all possible means, even if this would lead them to break the law… Their first assignment is to eliminate a gang of criminals who have stolen a shipload of explosives.
Two Hong-Kong cops are sent to Tokyo to catch an ex-cop who stole a large amount of money in diamonds. After one is captured by the Ninja-gang protecting the rogue cop, the other one gets his old Orphanage gang, dubbed the "Five Lucky Stars," to help him. They don't like this much, but they do it.
In late 19th Century Hong Kong the British may rule the land, but the pirates rule the waters. One Coast Guard officer is Dragon Ma, who is determined that his beloved Coast Guard will not be made a fool of.
Dragon is now transferred to be the police head of Sai Wan district, and has to contend with a gangster kingpin, anti-Manchu revolutionaries, some runaway pirates, Manchu Loyalists and a corrupt police superintendent.
Youthful martial arts master Lung is searching for his missing brother, when he is mistaken for a criminal on the run. He must prove his innocence by solving the case himself, while local lawmen and merciless mercenaries are hot on his trail.