Spenser: For Hire

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.

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.

Randall and Hopkirk (Deceased) is a British private detective television series. In the initial episode Hopkirk is murdered during an investigation, but returns as a ghost. Randall is the only main character able to see or hear him, although certain minor characters are also able to do so in various circumstances throughout the series.

Stu Bailey and Jeff Spencer are the wisecracking, womanizing private-detective heroes of this Warner Brothers drama. They work out of an office located at 77 Sunset Strip in Los Angeles, California, right next door to a snazzy restaurant where Kookie works as a valet. The finger-snapping, slang-talking Kookie occasionally helps Stu and Jeff with their cases, and eventually becomes a full-fledged member of the detective agency. Rex Randolph and J.R. Hale also join the firm, and Suzanne is their leggy secretary.

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.

Barnaby Jones is a television detective series starring Buddy Ebsen and Lee Meriwether as father- and daughter-in-law who run a private detective firm in Los Angeles. The show ran on CBS from January 28, 1973 to April 3, 1980, beginning as a midseason replacement. William Conrad guest starred as Frank Cannon of Cannon on the first episode of Barnaby Jones, "Requiem for a Son" and the two series had a two-part crossover episode in 1975, "The Deadly Conspiracy".

Laura Holt, a licensed private detective, opens a detective agency but finds that potential clients refuse to hire a woman, however qualified. To solve the problem, Laura invents a fictitious male superior whom she names Remington Steele. Through a series of events that unfold in the first episode, "License to Steele," a former thief and con man, whose real name is never revealed, assumes the identity of Remington Steele. Behind the scenes, Laura remains firmly in charge.

Charlie Grace is a Los Angeles private eye with a daughter named Jenny, works along with other cops, including his partner, Crawford, to solve different multiple mystery cases.

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.

Black Tie Affair is an American crime drama spoof that aired from May 29 until June 19, 1993.

Legmen is an American drama series that aired on NBC on Friday nights from January 20, 1984 to March 16, 1984.

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.

A chaebol cop joins forces with a gritty detective to take down criminals with a touch of wealth and a whole lot of wit.

The Law & Harry McGraw is an American mystery crime drama television series created by Peter S. Fischer and a spin-off of Murder, She Wrote. The series stars Jerry Orbach as a Harry McGraw, a loudmouthed, uncouth, old school private detective who continually finds himself solving mysteries on behalf of the prim and proper attorney Ellie Maginnis who has an office across the hall.

Former police officer Darby Spencer and her mystery novelist mother Victoria Spencer have opposite personalities but still embark on the unlikeliest of ventures: becoming partners in a private detective agency. They are mistaken as sisters as they tackle puzzling cases in Alder Bluffs.

Private Eye is an American crime drama that aired from September 13, 1987 until January 8, 1988.

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.

Michael Shayne is an American detective television series starring Richard Denning that aired on NBC from September 30, 1960 to May 19, 1961.

Brothers work as private investigators.

A private investigator who works when he wants, lives in a beachfront estate in Hawaii, drives a posh Ferrari, runs up an unlimited tab at a swank bar, and charms attractive women in peril - that's the lifestyle of Thomas Magnum, aka Magnum, P.I.