Keys of the City

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

Ex-con photographer RJ Decker becomes a PI in South Florida, solving strange cases with help from his journalist ex, her cop wife, and an enigmatic woman from his past who may help or destroy him.

A.J. Simon is a polished fellow with a taste for classic cars and tailored suits. Rick Simon is his less refined (but still pleasant) older brother who has a taste for cowboy boots and four-wheel drive pickups. The two of them live in San Diego, where they own a private detective agency.

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.

Private detective Mike Hammer hunts down criminals on the mean streets of New York City.

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.

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.

Frances Neagley is a private investigator in Chicago. When she learns that a beloved friend from her past has been killed in a suspicious accident, she becomes hell bent on justice. Using everything she's learned from Jack Reacher and her time as a member of the 110 Special Investigators, Neagley puts herself on a dangerous path to uncover a menacing evil.

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.

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 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.

When their ex-husband Raymond winds up murdered, Carole and Sydney set out to find his killer and eventually decide to run the detective agency Raymond has left them.

Jake Doyle and his ex-cop father, Malachy, run a Newfoundland detective agency. Their rugged seaside town never lacks for intriguing cases, and the Doyles don't always land on the right side of the law.

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.

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.

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.