Richard Diamond, Private Detective

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.

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.

Sherlock Holmes uses his abilities to take on cases by private clients and those that the Scotland Yard are unable to solve, along with his friend Dr. Watson.

From England to Egypt, accompanied by his elegant and trustworthy sidekicks, the intelligent yet eccentrically-refined Belgian detective Hercule Poirot pits his wits against a collection of first class deceptions.

Mystery and suspense series based on Robert Parker's "Spenser" novels. Spenser, a private investigator living in Boston, gets involved in a new murder mystery each episode.

A pie-maker, with the power to bring dead people back to life, solves murder mysteries with his alive-again childhood sweetheart, a cynical private investigator, and a lovesick waitress.

Mick St. John is a captivating, charming and immortal private investigator from Los Angeles, who defies the traditional blood-sucking norms of his vampire tendencies by using his wit and powerful supernatural abilities to help the living.

Bosch is now making a living as a private investigator two years after he quit the LAPD and finds himself working with one time enemy and top-notch attorney Honey “Money” Chandler. Meanwhile, Bosch's daughter Maddie is venturing into the world of the LAPD.

The New Avengers is a British secret agent fantasy adventure television series broadcast during 1976 and 1977. It is a sequel to the 1960s series The Avengers and was developed by Albert Fennell and Brian Clemens. A joint United Kingdom-France-Canada production, the show picks up the adventures of John Steed and his team of Avengers fighting evil plots and world domination. Whereas in the original series Steed had almost always been partnered with a woman, in the new series he had two partners: Mike Gambit, a top agent, crack marksman and trained martial artist, and Purdey, a former trainee with The Royal Ballet who was an amalgam of many of the best talents from Steed's previous female partners.

Cranky but likable L.A. PI Jim Rockford pulls no punches (but takes plenty of them). An ex-con sent to the slammer for a crime he didn't commit, Rockford takes on cases others don't want, aided by his tough old man, his lawyer girlfriend and some shady associates from his past.

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.

Jack Irish is a man getting his life back together again. A former criminal lawyer whose world imploded, he now spends his days as a part-time investigator, debt collector, apprentice cabinet maker, punter and sometime lover – the complete man really. An expert in finding those who don’t want to be found – dead or alive, Jack helps out his mates while avoiding the past. That is until the past finds him.

The mysterious disappearance of a Scottish fishing trawler and a death on-board the submarine HMS Vigil bring the police into conflict with the Navy and British security services. DCI Amy Silva and DS Kirsten Longacre lead an investigation on land and at sea into a conspiracy that goes to the very heart of Britain’s national security.

Ex-pro hockey player Matt Shade irrevocably changes his life when he teams up with fierce P.I. Angie Everett to form an unlikely investigative powerhouse.

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.