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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.

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.

Former police officer Robert and his wife Katy left city life behind them after Robert was injured, whilst trying to protect a witness in his care. The witness, Susan Reynolds was fatally shot. Robert has been struggling with the guilt he feels over the death of Susan. In a bid to put the past behind them, Robert and Katy now run a guest house, hidden away in the idyllic Lake District. A surprise visitor turns up, DCI Mark Maxwell, an ex-colleague and old friend. He suggests that the guest house is perfectly positioned to operate as a safe house, Robert is tempted but will Katy agree?

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.

An eccentric private investigator with a criminal past recruits a disgraced ex-cop to help solve the disappearance of a Korean tech pioneer in the wilds of Far North Queensland.

Karl Alberg moves to a quiet coastal town to soothe a psyche that has been battered by big-city police work but finds himself needing to call upon all his skills to solve the murders that continue to wash up on his shore.

Case Histories is a British drama television series based on the Jackson Brodie detective novels by Kate Atkinson. It stars Jason Isaacs as Jackson Brodie.

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.

Baretta is an American detective television series which ran on ABC from 1975 to 1978. The show was a milder version of a successful 1973–74 ABC series, Toma, starring Tony Musante as chameleon-like, real-life New Jersey police officer David Toma. While popular, Toma received intense criticism at the time for its realistic and frequent depiction of police and criminal violence. When Musante left the series after a single season, the concept was retooled as Baretta, with Robert Blake in the title role.

Matt Houston is an American crime drama series that aired on ABC from 1982 to 1985. Created by Lawrence Gordon, the series was produced by Aaron Spelling.

Jim Bergerac is a detective sergeant in The Foreigners Office who likes to do things his own way. While dealing with his own personal demons Bergerac has a knack of finding trouble, and sometimes causing it.

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.

Private detective Dan Tanna drives around the streets of Las Vegas in a red 1957 Ford Thunderbird solving crimes and making Las Vegas a better place for residents and tourists alike.

An ex-cop hosts a late-night talk radio program while getting involved with his listeners' problems in his off-time.

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.

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.

A small team of investigators are assembled to track down and capture the most dangerous killers our country has ever seen, all of whom have just escaped from a top-secret prison that's not supposed to exist.

In 1953 at the hamlet of Grantchester, Sidney Chambers—a charismatic, charming clergyman—turns investigative vicar when one of his parishioners dies in suspicious circumstances.

Frances Neagley is a private investigator in Chicago and former military colleague of Jack Reacher in the Army's 110th Special Investigations Unit. When she learns that a beloved friend from her past has been killed in a suspicious accident, she becomes hell-bent on justice.

When an assassin's bullet confines him to a wheelchair for life ending his career as Chief of Detectives, Robert T. Ironside becomes a consultant to the police department. Detective Sergeant Ed Brown and policewoman Eve Whitfield join with him to crack varied and fascinating cases. Ex-con Mark Sanger is employed by the chief as home help but eventually becomes a fully fledged member of the team also. Officer Whitfield leaves after 4 years service, and is replaced by Officer Fran Belding.

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.

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.

Cassie & Co. is an American drama series broadcast on NBC as a mid-season replacement. 13 episodes were produced, but it was pulled after four episodes in February 1982, with the rest airing in the summer. Angie Dickinson stars as Cassie Holland, a tough, divorced ex-cop who becomes a private detective, taking over a detective agency with her ex-con secretary Meryl (Dori Brenner) and gym instructor Benny (A. Martinez).

Beach Girls was a six-part 2005 American mini-series produced by Fox and Robert Greenwald Productions and broadcast by Lifetime. The teleplay by Edithe Swensen, Elle Triedman, and Eric Tuchman was based on the bestselling novel by Luanne Rice. The Beach Girls were three teenagers who spent their summers in the small, quiet beach town of Hubbard's Point. The trio grew apart and eventually went their separate ways, but the death of one of them reunites the surviving two, Stevie and Maddie, when her widower Jack and daughter Nell arrive in town. Paul Shapiro, Sandy Smolan, and Jeff Woolnough shared directing credits. The cast included Rob Lowe as Jack, Chelsea Hobbs as Nell, Julia Ormond as Stevie, and Katherine Ashby as Maddie, with Chris Carmack and Cloris Leachman in featured roles. The opening credits theme song was "Dreams," written by Dolores O'Riordan and Noel Hogan and performed by The Cranberries. The series was filmed in Chester, Crystal Crescent Beach, and Halifax, all located in Nova Scotia, Canada. It aired in France and Sweden in 2006, Australia in 2007 and New Zealand in 2010. It has been released on DVD by Warner Home Video.

When Nick Garrett was 18, he packed up his truck and said goodbye for a summer road trip that turned into 10 years of being away. He has since become a literary celebrity in New York, living off the fame and fortune of his best-selling novel and movie, based on his hometown friends. To the literary world, Nick defined a generation, but to his hometown, he betrayed them by sharing secrets. Now, without inspiration for a new book, Nick returns to his hometown to find that feelings toward him have changed.

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

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.

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.

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.

The Raders are a normal middle-class American family on the run hiding from the legal system that unjustly accused Paul Rader of a terrible and violent crime. Adding to the danger, the real killer is now threatening the lives of the Rader children.

Framed for murder, Detective Reno Raines becomes a fugitive bounty hunter who fights crime while trying to clear his name. His troubles began after he testified about police corruption, leading Lt. Donald Dixon to set him up.

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.

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.

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.

Fabulously wealthy London housewife Sammy, is forced to return to the town in Australia she grew up in. But in coming home, Sammy must revisit her past and the events that led her to flee as a teenager years ago.

Providence is an American television drama series.

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.

After his wife leaves him and he's fired from his job at a high-profile New York city law firm, Ed Stevens moves back to his small hometown of Stuckeyville where he buys the local bowling alley and attempts to win the heart of his high school crush.