Richard Diamond, Private Detective

In the fictional town of Neptune, California, student Veronica Mars progresses from high school to college while moonlighting as a private investigator under the tutelage of her detective father.

Set in 1932 Los Angeles, the series focuses on the origin story of famed defense lawyer Perry Mason. Living check-to-check as a low-rent private investigator, Mason is haunted by his wartime experiences in France and suffering the effects of a broken marriage. L.A. is booming while the rest of the country recovers from the Great Depression — but a kidnapping gone very wrong leads to Mason exposing a fractured city as he uncovers the truth of the crime.

Adrian Monk was once a rising star with the San Francisco Police Department, legendary for using unconventional means to solve the department's most baffling cases. But after the tragic (and still unsolved) murder of his wife Trudy, he developed an extreme case of obsessive-compulsive disorder. Now working as a private consultant, Monk continues to investigate cases in the most unconventional ways.

A formerly blacklisted spy uses his unique skills and training to help people in desperate situations.

My Friend Tony is an American crime drama that aired on NBC in 1969. The pilot originally aired as "My Pal Tony" on The Danny Thomas Hour on March 4, 1968.

The Outsider was the story of David Ross, a go-it-alone private investigator who's always where the action is. Darren McGavin played Ross, a man living in an off-beat, always-dangerous world. The series aired for one season on NBC and was a precursor of sorts to The Rockford Files in that it featured a loner private detective who had previously done time in prison for a crime he didn't commit and who never quite fit into a rapidly changing environment.

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.

When a house explodes in a quiet Oxford suburb and a girl disappears in the aftermath, neighbor Sarah Tucker becomes obsessed with finding her and enlists the help of private investigator Zoë Boehm. Zoë and Sarah suddenly find themselves in a complex conspiracy that reveals that people long believed dead are still among the living, while the living are fast joining the dead.

Partners in Crime is an American crime drama television series that aired from September 22 until December 29, 1984.

The cases of a private investigations agency run by two Vietnam War veterans and their computer geek friend from high school, armed with toughness, their own helicopter, and the third's technical ability.

Mickey Spillane's Mike Hammer is the title used for two syndicated television series that followed the adventures of fictional private detective Mike Hammer. The gritty, crime fighting detective—created by American crime author Mickey Spillane—has also inspired several feature films and made-for-TV movies.

Private detective Varg Veum lives, and is consulted in various criminal cases, in Bergen on the west coast of Norway.

Buddy Faro was the best private detective in the business, until he disappeared in 1978 after a case went bad. Twenty years later, he's brought back to Los Angeles by private detective Bob Jones and they reopen Buddy Faro Investigations.

Mickey Spillane's Mike Hammer, with Stacy Keach in the title role, is a television series that originally aired on CBS from January 28, 1984 to January 12, 1985. The series was 24 sixty minute episodes. The show follows the adventures of Mike Hammer, the fictitious private detective created by crime novelist Mickey Spillane, as he hunts down criminals on the mean streets of New York City.

Dex Parios is a strong, assertive, and unapologetically sharp-witted Army veteran working as a P.I. in Portland, Oregon. With a complicated personal history and only herself to rely on, she solves other people’s messes with a blind eye toward her own.

Jake and the Fatman is a television crime drama starring William Conrad as prosecutor J. L. "Fatman" McCabe and Joe Penny as investigator Jake Styles. The series ran on CBS for five seasons from 1987 to 1992. Diagnosis: Murder was a spin-off of this series.

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.

On Seon-woo is the head of the biggest company in Korea. He also secretly runs a private detective agency. On the other hand, Don Se Ra is a person with extraordinary vision and uses this ability to help people...

Meet McGraw is an American dramatic television series starring Frank Lovejoy in the role of the hard-hitting detective McGraw, a man specifically given no first name in the program. Forty-one half-hour episodes aired on NBC during the 1957-1958 season, sponsored by Procter & Gamble. The series was produced by the Desilu Studios, most of whose productions were broadcast by CBS. The theme song for the series is "One For My Baby" by Harold Arlen and Johnny Mercer. Meet McGraw preceded The Bob Cummings Show on Tuesday evenings on NBC. It aired at 9:00pm ET/PT opposite John Lupton’s Western series, Broken Arrow on ABC and Bud Collyer's To Tell the Truth quiz show on CBS. After its cancellation, Meet McGraw was repeated as The Adventures of McGraw on ABC in 1958-1959, but not in prime time. A number of episodes of the series, including "Mohave" and "Lady in Limbo," are available on DVD.

Haunted is an American television program first aired in September 2002 on UPN. The program, which was filmed in Vancouver, was canceled in November 2002 due to low ratings. As a result, only seven of the completed episodes were aired. However, all eleven filmed episodes have subsequently been shown in international airings of the show. In August 2007, the series aired on HDNet. The series then began airing on Sci Fi in September 2007 and January 2008. In 2009, Chiller began airing this program as part of their daily marathon line-up. It plays there sporadically. A marathon of the entire series ran all day on October 31, 2010 on Universal HD.