Target: The Corruptors!

Nikita is a drug-addicted juvenile delinquent who was accused of killing a police officer in cold blood during an attempted robbery of a pharmacy. She is later arrested and sentenced to death by lethal injection, upon which she was secretly drugged by the government, faking her death. Nikita is then "recruited" by a secret government organization and transformed into a highly skilled assassin who cannot be traced.

21 Jump Street revolves around a group of young cops who would use their youthful appearance to go undercover and solve crimes involving teenagers and young adults.

Riker is an American crime drama television series that aired from March 14 until April 11, 1981.

Sydney Bristow, an agent who has been tricked to believe she is working for the U.S. government, is actually working for a criminal organization named the Alliance of Twelve. Upon learning this, Sydney becomes a double agent for the real CIA.

The story of the Miami Police Department's vice squad and its efforts to end drug trafficking and prostitution, centered on the unlikely partnership of Sonny Crockett and Ricardo Tubbs - who first meet when Tubbs is undercover in a drug cartel.

Fastlane is an American action/crime drama series that was broadcast on Fox from September 18, 2002 to April 25, 2003.

A chilling and unflinching look at all sides of a complicated issue, focusing on an African-American Muslim who joins an Islamic sleeper terrorist cell in the United States while working undercover for the FBI.

Luo Xiang, a former narcotics agent, faked his death during an undercover operation. Five years later, he's living under a new name, but needs to pretend to be his old self and once again infiltrate the drug cartel, dealing with his former lover, brothers and enemies, to finally successfully complete the mission and find out who's pulling the strings.

UC: Undercover is an action-thriller television series that focuses on the secret lives and private demons of an elite Justice Department crime-fighting unit that confronts the country’s deadliest, most untouchable lawbreakers by going undercover to bust them. The series was broadcast from 2001 to 2002. The stories were written by Shane Salerno. James Bond composer David Arnold wrote the main title theme and scored the pilot episode. Salerno said the show would be a "very music driven series." UC: Undercover was a production of NBC Studios in association with Jersey Films, Chasing Time Pictures, Regency Television, and 20th Century Fox Television. Its short but popular run ended when it was canceled by the network. The show developed a passionate following overseas and continues to run on FX International.

New York Undercover is an American police drama The series stars Detective J.C. Williams and Detective Eddie Torres, two undercover detectives in New York City's Fourth Precinct who were assigned to investigate various crimes and gang-related cases.

A young agent goes undercover to befriend a drug smuggler's wife. But the closer she gets to her target, the more complicated her mission becomes.

Cover Up is an American action/adventure television series that aired for one season on CBS from September 22, 1984 to April 6, 1985. Created by Glen A. Larson, the series stars Jennifer O'Neill, Jon-Erik Hexum, Antony Hamilton, and Richard Anderson.

A young CIA operative, Annie Walker, is mysteriously summoned to headquarters for duty as a field operative. While Annie believes she's been promoted for her exceptional linguistic skills, there may be something or someone from her past that her CIA bosses are really after. Auggie Anderson is a CIA military intelligence agent who was blinded while on assignment and is Annie's guide in this world of bureaucracy, excitement and intrigue.

Working for the FBI's Deep Cover Operations division, Martin Odum can transform himself into a different person -- whether it's an assignment as a Serbian extremist, a corrupt Chicago police officer, a British special forces colonel, or a legendary computer hacker. But when he learns that his life, itself, may be a lie, he faces the demands of his job and a desire to solve the mystery of his identity. And given the choice between the two, Odum doesn't always make the right decision.

In 1948, Yu Beiping, an important official of the Special Investigation Bureau, was transferred to Qingcheng by his superior and was ordered to investigate the murder case that occurred there. In fact, Yu Beiping's true identity is being investigated and suspected by his superior, and he is in danger all the time. Yu Beiping has to successfully complete the tasks assigned by his superior on one hand, deal with the cunning and insidious enemy on the other hand, and also bear the incomprehension and misunderstanding from his closest relatives. He is in a difficult battle.

Vinnie Terranova does time in a New Jersey penitentiary to set up his undercover role as an agent for the OCB (Organized Crime Bureau) of the United States. His roots in a traditional Italian city neighborhood form the underlying dramatic base throughout the series, bringing him into conflict with his conservative mother and other family members while acting undercover as syndicate enforcer.

O Ha Na is a lowly police officer who lacks a sense of duty and believes that it is worth bending the rules in order to achieve your aims. She meets and begins to investigate Ko Jin Hyeok, an elite intelligence agent, and they clash instantly based on their different morals. Their initial dislike of each other masks their romantic attraction, but this development is hindered by the existence of Choi Eun Seo, Jin Hyeok's first love.

The Ghost Squad was a 2005 British crime drama series produced by Company Pictures, for Channel 4. The show was created by Tom Grieves. Inspired by the real life "Ghost Squad" that existed between 1994 and 1998, secretly investigating police corruption, the premise of the series is that the squad continued to operate in secret after officially being shut down. It starred Elaine Cassidy as a police constable recruited into the squad and Jonas Armstrong as her handler. The show was cancelled after a single seven episode series.

A secret organisation called The Outfit recruits and trains civilians, sending them undercover to aid in the war effort, or placing them in administrative tasks to aid the group. Each person arrives at The Outfit by a different route: Mathilde ('Matty') escaped to London from France and wants desperately to contribute to the war effort; Liz, whose husband is serving overseas and whose brother has just died in the war, stumbles into the group almost by accident. Former actor Colin Beale also trains for undercover work. Vivien's husband was executed when his work with The Outfit was uncovered. But they all come together against the common enemy.

David Cassidy: Man Undercover was an American police drama starring David Cassidy, four years after his run starring in the The Partridge Family. The series was spun off after Cassidy guest starred in a special two-hour episode of another show, Police Story, titled A Chance to Live, which aired in May 1978; this episode is therefore sometimes confusingly referred to as the pilot for Man Undercover. In A Chance to Live, Cassidy portrayed undercover police officer Dan Shay, a cop who successfully infiltrates a high-school drug ring as a fellow student. Cassidy earned an Emmy Award nomination for Best Dramatic Actor for the role. He reprised the role of Officer Shay for the Man Undercover series, which aired on NBC from November 2, 1978 to July 12, 1979. Only ten episodes of the show aired prior to its cancellation.