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.

The Woman in Black and the Black Dragon (1966)
Celebrity Sadora is seriously wounded in an air crash. Police commissioner Suen and subordinate Ko Cheung find out Sadora was under duress from the Black Dragon Gang to collude with the criminals who had held his daughter hostage. When Ko, assuming Sadora's identity to safeguard his life, is abducted by the gang, Suen turns to 'Black Musketeer' Muk Lan-fa. By blatantly refusing to cooperate with the authorities, Muk escapes the surveillance of both the police and the gang. Acting alone, she scouts the location of the lair but ends up being imprisoned in the same cell with Ko. The captives use every trick in the book to escape. An undaunted Muk returns to infiltrate the den, while her sister Sau-chen, Suen and Ko are lying in wait. The hostages are released and the gang wiped out in a battle fiercely fought. (Synopsis based on visual audiomaterials)

The Departed (2006)
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.

District B13 (2004)
Set in the ghettos of Paris in 2010, an undercover cop and ex-thug try to infiltrate a gang in order to defuse a neutron bomb.

Taxi (2004)
A mouthy and feisty taxicab driver has hot tips for a green and inept cop set on solving a string of New York City bank robberies committed by a quartet of female Brazilian bank robbers.

Assault on Precinct 13 (2005)
On New Year's Eve, inside a police station that's about to be closed for good, officer Jake Roenick must cobble together a force made up cops and criminals to save themselves from a mob looking to kill mobster Marion Bishop.

Serpico (1973)
New York cop Frank Serpico blows the whistle on the rampant corruption in the force only to have his comrades turn against him.

Street Kings (2008)
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.
Oh Yeah! The Return of Kool-Aid Man (2003)
Some bad men are pushing a designer version of Kool Aid, and people are getting hurt. The stakes are high as Kool Aid Man, goes undercover to stop the drug dealers, save the girl and quench your thirst. See Kool Aid Man in butt kicking, kung fu’ing, sugary, refreshing action as he burst through the walls to take back his city.

Overkill (1987)
A Tokyo cop is sent to Los Angeles to help an LAPD detective break up a yakuza ring operating in the city.
The Secret Code (1965)
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)

Hard to Kill (1990)
Mason Storm, a 'go it alone' cop, is gunned down at home. The intruders kill his wife, and think they've killed both Mason and his son too. Mason is secretly taken to a hospital where he spends several years in a coma. His son meanwhile is growing up thinking his father is dead. When Mason wakes up, everyone is in danger - himself, his son, his best friend, his nurse - but most of all those who arranged for his death

Running Scared (1986)
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.

The Mod Squad (1999)
Three youthful delinquents escape conviction for their crimes by teaming with the LAPD.

Are You The Rat? (NaN)
Three gang members are tasked with uncovering a rat within their crew, but one of them is an undercover cop trying to survive without blowing his cover

Murder at Covent Garden (1932)
A detective goes undercover and poses as a criminal to try to discover the reasons behind the murder of a night club owner.

Brooklyn's Finest (2010)
Enforcing the law within the notoriously rough Brownsville section of the city and especially within the Van Dyke housing projects is the NYPD's sixty-fifth precinct. Three police officers struggle with the sometimes fine line between right and wrong.

Dark Angel (1990)
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...

Deep Cover (1992)
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.

Crazy Fist (2021)
After an opponent dies mid-match, a prominent MMA champion swore never to fight again and retired to run his family's company. But when his best friend dies under suspicious circumstances, he has no choice but to step back in the ring.

Don (1978)
A ruthless gangster named Don is killed during a scuffle with the police. Since only DSP D'Silva knows of this incident, he recruits Vijay, who is a spitting image of Don, to replace the original Don and infiltrate his gang. D'Silva plans to nab the entire gang, but when he dies during a raid, the secret that Vijay is not Don is also buried with him.