Tenspeed and Brown Shoe

Barnaby Jones is a television detective series starring Buddy Ebsen and Lee Meriwether as father- and daughter-in-law who run a private detective firm in Los Angeles. The show ran on CBS from January 28, 1973 to April 3, 1980, beginning as a midseason replacement. William Conrad guest starred as Frank Cannon of Cannon on the first episode of Barnaby Jones, "Requiem for a Son" and the two series had a two-part crossover episode in 1975, "The Deadly Conspiracy".

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.

Michael Shayne is an American detective television series starring Richard Denning that aired on NBC from September 30, 1960 to May 19, 1961.

Brothers work as private investigators.

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.

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.

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.

Cassie & Co. is an American drama series starring Angie Dickinson that aired on NBC in 1982.

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.