Movies like Infernal Affairs

To take down South Boston's Irish Mafia, the police send in one of their own to infiltrate the underworld, not realizing the syndicate has done likewise. While an undercover cop curries favor with the mob kingpin, a career criminal rises through the police ranks. But both sides soon discover there's a mole among them.

In this prequel to the original, a bloody power struggle among the Triads coincides with the 1997 handover of Hong Kong, setting up the events of the first film.

A member of an elite paramilitary counter-terrorism unit becomes traumatized after witnessing the suicide bombing of a young girl and is forced to undergo retraining. However, unbeknownst to him, he becomes a key player in a dispute between rival police divisions, as he finds himself increasingly involved with the sister of the girl he saw die.

In 2029, an elite police squad combats an anti-reunification terrorist group while another enemy lurks nearby.

Jae-ho, who aims to become the number one in a crime organization, gets to build up trust with Hyun-su, an ambitious newbie in prison. When they try to take over the organization after their release, their ulterior motives start to emerge.

In the early 1970s, the Governor of Hong Kong decided to clean up the police force. The ICAC was established, whose operation branch was headed by Yim. Bong and Unicorn also joined the ICAC. Despite threats of violence and intimidation, they managed to bring about the downfall of the empire of graft.

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

Drug lord Dwayne Gittens rules Cincinnati with an iron fist. No wonder he's known as "God" on the streets. Determined to break Gittens' stranglehold on the city is undercover cop Jeffrey Cole. But as Cole takes on an assumed identity to penetrate Gittens' criminal empire, he makes a disturbing discovery -- he kind of likes being a gangster.

Two brothers, on either side of the law, face off over organized crime in Brooklyn during the 1970s.

Triad gangster turned corrupt cop Lau Kin-ming goes to dangerous lengths to avoid detection.

Two detectives who are up to their necks in trouble and in each other's face, as they try to shut down a drug-trafficking scheme that could be connected with international ties to organized crime. But in the midst of their investigation, innocent immigrant dock worker Luk Wan-Ting gets caught up in the mix when he witnesses the murder of an intelligence operative and is framed for the crime.

A crime photographer gets involved in a conspiracy.