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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.

Gabriel's Fire is an American television series that ran on ABC in the USA in 1990–1991. A revamped version of the series, entitled Pros and Cons, aired briefly the following season.

A retired policeman and a former criminal must face their past when their daughters' lives are suddenly put at risk in this gangster thriller shining a light on the dark and dangerous activities of the Warsaw Mafia.

La Femme Nikita was a Canadian action/drama television series based on the French film Nikita by Luc Besson. The series was co-produced by Jay Firestone of Fireworks Entertainment and Warner Bros.. It was adapted for television by Joel Surnow. The series was first telecast in North America on the USA Network cable channel on January 13, 1997, and ran for five television seasons—until March 2001. The series was also aired in Canada on the over-the-air CTV Television Network. La Femme Nikita was the highest-rated drama on American basic cable during its first two seasons. It was also distributed in some other countries, and it continues to have a strong cult following.

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

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Cannon is a CBS detective television series produced by Quinn Martin which aired from March 26, 1971 to March 3, 1976. The primary protagonist is the title character, private detective Frank Cannon, played by William Conrad. He also appeared on two episodes of Barnaby Jones. Cannon is the first Quinn Martin-produced series to be aired on a network other than ABC. A "revival" television film, The Return of Frank Cannon, was aired on November 1, 1980. In total, there were 124 episodes.

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.

Ex-cop and recovering alcoholic Hank Dolworth partners with his best friend, former criminal Britt Pollack, in an unlicensed private investigation business. The series is set in Ocean Beach, San Diego, California, although it is portrayed as a distinct town, with Dolworth having once been a member of the fictional Ocean Beach Police Department.

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.

Members of a secret society chase immortality by seeking refuge in the bodies of others.

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.

When one accidental killing leads to another, an ordinary young man finds himself stuck in an endless cat-and-mouse chase with a shrewd detective.

Seo Jae-won who suffered an unfortunate childhood, becomes an ambitious and driven CEO that chases after success. But when her obsession gets out of hand, she tries to escape from her unhealthy desires but her husband, a designer and college professor, gets swept up in the process.

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.

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.

Ex Scotland Yard detective Millie-Jean Black returns to Kingston to work missing persons; soon finding herself on a quest to save a sister who won’t be saved, to find a boy who can’t be found, to solve a case that will blow her world apart and prove almost as tough to crack as Millie Black.

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.

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.

Michael Long, an undercover police officer, is shot while investigating a case and left for dead by his assailants. He is rescued by Wilton Knight, a wealthy, dying millionaire and inventor who arranges life-saving surgery, including a new face and a new identity--that of Michael Knight. Michael is then given a special computerized and indestructible car called the Knight Industries Two Thousand (nicknamed KITT), and a mission: apprehend criminals who are beyond the reach of the law. The series depicts Michael's exploits as he and KITT battle the forces of evil on behalf of the Foundation for Law and Government.