Detective in the House

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.

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.

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

Jazz pianist Johnny Staccato supplements his meager musician's income by working as a private detective. The background for many of the episodes is his friend "Waldo's" jazz club in New York City's Greenwich Village, featuring performances by the Pete Candoli jazz combo which included Barney Kessel, Shelly Manne, Red Mitchell, Red Norvo and Johnny Williams. The theme was composed by Elmer Bernstein.

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.

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.

Moon Over Miami is a short-lived American comedy series that aired on ABC.

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.

Blood Ties is a Canadian television series based on the Blood Books by Tanya Huff; the show was created by Peter Mohan. It is set in Toronto, Canada and has a similar premise to an earlier series also set in Toronto, Forever Knight, in which a vampire assists police in dealing with crime. It premiered in the United States on March 11, 2007 on Lifetime Television, and during fall of 2007 on Citytv and Space in Canada. In May 2008, Lifetime declined to renew the 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.

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.

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.

A modern day version of the 1969 detective series about Private Investigator Jeff Randall, who is aided in cases by the ghost of his deceased partner Marty Hopkirk.

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

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.

Investigator Alexa Crowe, cannot help fighting the good fight – whether it is solving murders or combatting the small frustrations of everyday life. Fearless and unapologetic, Alexa's unique skills and insights into the darker quirks of human nature, allows her to provoke, comfort and push the right buttons as she unravels the truth behind the most baffling of crimes.

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.

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.

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.