Spenser: For Hire(1985)

Certified public accountant Andy Barker reluctantly becomes a private investigator after he is mistaken for the former office tenant, who was a private eye.

A Chicago-based wizard works as a private investigator.

This true crime docuseries examines the murder of Annie Mae Aquash – a Mi'kmaq woman from Nova Scotia, Canada, a mother of two daughters, a teacher, and a revolutionary who fought for Indigenous rights in the 1970s whose death went unsolved for almost 30 years.

Despite their opposing personalities, a talented but directionless P.I. who is the black sheep of his family begrudgingly agrees to work as the in-house investigator for his overbearing mother, a successful attorney reeling from the recent dissolution of her marriage.

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.

Akira Hamura likes mystery books. She is 34-years-old, single and works part-time at the Murder Bear Bookshop. She also works as a private investigator. While working on cases, she experiences unlucky and unexpected situations. Because of this, she is known as "The World's Most Unfortunate Private Investigator."

Private detective Jack Carter is nothing if not eccentric: penniless, he lives, eats and sleeps at the office. When it comes to work, he accepts only those rare cases that intrigue him and leave other detectives mystified. No investigation is too strange or unusual to dishearten Carter.

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.

Victims of romance scams try to reclaim their lives with help from "The Tinder Swindler" target Cecilie Fjellhøy and private investigator Brianne Joseph.

Ally McBeal is a young lawyer working at the Boston law firm Cage and Fish. Ally's lives and loves are eccentric, humorous, dramatic with an incredibly overactive imagination that's working overtime!

Banacek is an American detective TV series starring George Peppard that aired on the NBC network from 1972 to 1974. The series was part of the rotating NBC Wednesday Mystery Movie anthology. It alternated in its time slot with several other shows but was the only one to last beyond its first season.

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.

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.

The View from Daniel Pike is a 1971–73 Scottish TV drama series created and written by Edward Boyd, and starring Roddy McMillan as Daniel Pike, a hard-boiled private detective based in Glasgow. A few of the stories were later adapted into book form.

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).

After being duped and going bankrupt, model Maddie is convinced by David to become a partner in a detective agency. Together they solve various cases, while getting comfortable with each other.

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.

1964-65. Singapore is a city at a crossroads. Political and racial tensions are at fever pitch as the British pull out, and a new nation is about to be born. The lights of Bugis Street have never burned so bright: bootleg copies of Motown songs boom out from street stalls; the Rolling Stones are in town along with tourists and American sailors fresh from Vietnam. They join British and Australian soldiers checking out the prostitutes and gambling dens, en route to their own war in Borneo. This is the city of Sam Callaghan, Patricia Cheng, the CIA’s Conrad Harrison and the clients of the Cheng Detective Agency. The agency’s cases range from the usual (straying spouses and petty fraudsters) to events with international implications and complications. Sam’s contacts from his military days are useful - but they start to drag him back into a dark world that he would prefer to leave behind.

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.

Baywatch Nights is an American police and science fiction drama series that aired in syndication from 1995 to 1997. Created by Douglas Schwartz, David Hasselhoff, and Gregory J. Bonann, the series is a spin-off from the popular television series, Baywatch.