Tom Ludlow is a disillusioned L.A. Police Officer, rarely playing by the rules and haunted by the death of his wife. When evidence implicates him in the execution of a fellow officer, he is forced to go up against the cop culture he's been a part of his entire career, ultimately leading him to question the loyalties of everyone around him.
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.
The night shift clerk at a sex hotel, suffering from narcolepsy, is faced with a night when things are unusually busy and housekeeping finds a gun in room 6.
A cop Arul (Arya) is on an undercover mission to capture the underworld don Jothi (Ashutosh Rana) who runs a smuggling mafia in Goa. When both Arul and his friend Chandra (Ramanna) plans to arrest Jothi, things go haywire and the rest of the story tells us whether Arul completes his mission by playing a mind game.
Following the tragic events of Sting of the Scorpion, Maggie finds herself stripped of her rank and committed to an insane asylum. The crooked cop who put her there offers to procure her release and reinstatement - if she'll go undercover as a bar hostess to spy on the triads. The whole thing's a setup, of course, and soon Maggie is on the run from the law, as well as nursing a bad heroin addiction. She finds refuge in the criminal underworld, where she accepts a job as an undercover assassin. But when her identity is exposed, Maggie has both sides of the law gunning for her life.
Two street-wise Chicago cops have to shake off some rust after returning from a Key West vacation to pursue a drug dealer that nearly killed them in the past.
Black police officer Russell Stevens applies for a special anti-drug squad which targets the highest boss of cocaine delivery to LA—the Colombian foreign minister's nephew. Russell works his way up from the bottom undercover, until he reaches the boss.
A pair of taxi-driving NYC detectives take up the case of tourists who are robbed of their money and luggage by a shady limo driver. Things get dicey when the tourists accidentally get mixed up in a drug dealer's murder and money heist, while the detectives go after a hit man posing as a friend from the `hood'.
Jack Caine is a Houston vice cop who's forgotten the rule book. His self-appointed mission is to stop the drugs trade and the number one supplier Victor Manning. Whilst involved in an undercover operation to entrap Victor Manning, his partner gets killed, and a sinister newcomer enters the scene...
College student Jake Lo is pursued by smugglers, mobsters and crooked federal agents after he witnesses a murder by a Mafia kingpin.
Undercover cop Jim Raynor is a seasoned veteran. His partner, Kristen Cates, is lacking in experience, but he thinks she's tough enough to work his next case with him: a deep cover assignment to bring down the notoriously hard-to-capture drug lord Gaines. While their relationship turns romantic during the assignment, they also turn into junkies, and will have to battle their own addictions if they want to bring down Gaines once and for all.
While investigating police corruption in his department, undercover cop Buster McHenry is forced to participate in a heist, leading to innocent casualties and the theft of an ancient Lakota tribal spear. After McHenry ends up severely wounded, he is taken in by Native American Hank Storm, who is out to recover the spear and avenge the death of a loved one in the heist.
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 the prison. While they try to take over the organization after the prison release, their ulterior motives starts to emerge.
Detectives Jimmy and Paul, despite nine years as partners, can still sometimes seem like polar opposites—especially when Paul's unpredictable antics get them suspended without pay. Already strapped for cash and trying to pay for his daughter's wedding, Jimmy decides to sell a rare baseball card that's worth tens of thousands. Unfortunately, when the collector's shop is robbed and the card vanishes with the crook, Paul and Jimmy end up going rogue, tracking down the card and the drug ring behind its theft, all on their own time and without any backup—except for each other.
A tough cop meets his match when he has to guard a gangster's widow on a train journey from Chicago to Los Angeles.
After surviving an attempt on his life by his former partner, officer Cliff Garrett (Norris) exacts revenge on those who wronged him by going undercover as a hit man. He works to gain the reputation and trust needed in order to be accepted by the burgeoning Seattle-area criminal underworld, but it is all done in order to take it down from within.
Ko Chow is an undercover cop who is under pressure from all sides. His boss, Inspector Lau, wants him to infiltrate a gang of ruthless jewel thieves; his girlfriend wants him to commit to marriage or she will leave Hong Kong with another lover; and he is being pursued by other cops who are unaware that he is a colleague. Chow would rather quit the force, feeling guilty about betraying gang members who have become his friends.
Leader of the Celestial Devil Gang Mo Fu ends an underling to infiltrate the house of code expert Cheung Yuet-ting in pursuit of the Mafia's secret intelligence. The unyielding man is killed, and the Mafia is framed for the crime. Cheung's instrumental role in the Mafia is succeeded by his daughter Oi-lan, who leads both gangs onto a deadly chase. Just then, Oi-lan's bosom friend Chan Yu-lam emerges from years of oblivion as a Mafia member and offers the wanted woman protection and assistance in retrieving the late father's cache. Mo's underling Lau Kei-fung is assigned the task of playing the confidence game in the Cheung household, preempting Oi-lan from accessing the classified information and abducting both Oi-lan and Chan before the Mafia can reach the key witness. Acting on a tip-off, the police raid the apartment and arrest both gangs. Chan, the undercover police officer, gains both Oi-lan's trust and affection. (Synopsis based on audiovisual materials)
Twenty years after Professor Yu’s tragic death while trying to stop the new drug MG32, traces of the drug resurface in an overseas murder case, indicating the return of drug lord Sha Kun. Now, Yu’s son, undercover officer Yu Fei, teams up with law enforcement in a high-stakes operation to take down the powerful international drug syndicate.
In order to infiltrate a gang of drug smugglers, a cop is sent undercover to participate in a drag-queen beauty contest aboard a cruise ship.