Monk

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.

Checkmate

Checkmate is an American detective television series starring Anthony George, Sebastian Cabot, and Doug McClure. The show aired on CBS Television from 1960 to 1962 for a total of 70 episodes and was produced by Jack Benny's production company, "JaMco Productions" in co-operation with Revue Studios. Guest stars included Charles Laughton, Peter Lorre, and Lee Marvin, among many other commensurately prominent performers.

B.J. Fletcher: Private Eye

B.J. Fletcher: Private Eye is a web series centering on the investigatorial shenanigans of Private Investigator Beatrix Jane (B.J.) Fletcher and her best friend and assistant, Georgia (George) Drew.

Buddy Faro

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.

Mike Hammer

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.

Spenser: For Hire

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.

Schwartz & Schwartz

Sons of Thunder

Sons of Thunder is a television show that ran from March to April 1999 on CBS. It was a spin-off of Walker, Texas Ranger.

Mannix

Mannix is an American television detective series that ran from 1967 through 1975 on CBS. Created by Richard Levinson and William Link and developed by executive producer Bruce Geller, the title character, Joe Mannix, is a private investigator. He is played by Mike Connors. Mannix was the last series produced by Desilu Productions.

Burn Notice

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

Sherlock Holmes

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.

Terriers

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.

Varg Veum

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

The Rockford Files

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.

Meet McGraw

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.

Magnum, P.I.

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.

Agatha Christie's Poirot

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.

King & Maxwell

Sean King and Michelle Maxwell aren't your typical pair of private investigators. As discredited Secret Service agents, their unique skills often give them a leg up on suspects and conventional law enforcement. He's charming and always one step ahead of the game; she's a fearless force to be reckoned with. As a team, they're unstoppable.

Boon

Boon is a British television drama and modern-day western series starring Michael Elphick, David Daker, and later Neil Morrissey. It was created by Jim Hill and Bill Stair and filmed by Central Television for ITV. It revolved around the life of a modern-day Lone Ranger and ex-firefighter, Ken Boon.

My Friend Tony

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.