Die Fälle des Herrn Konstantin

Glenn Hall runs a less-than-conventional detective. Her staff includes Roberta Young, a detective who goes to great lengths to get the job done; Manny Lott, the resident technology wiz; and Dana Plant, a former Santa Monica police detective.

Tamotsu is suspected of murdering his actress wife Shizuka Harada. He flees to Taiwan and commits suicide. Tamotsu’s friend Banji Masuzawa works as a private detective, and has doubts about Tamotsu’s death, but the case is covered up by powerful media mogul Heizo Harada.

Jonathan Ames, a young Brooklyn writer, is feeling lost. He's just gone through a painful break-up, thanks in part to his drinking, can't write his second novel, and carouses too much with his magazine editor. Rather than face reality, Jonathan turns instead to his fantasies — moonlighting as a private detective — because he wants to be a hero and a man of action.

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".

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.

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.

Privatdetektiv Frank Kross

The adventures of an irreverent private detective, while he is dealing with economic problems.

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.

Shoestring is a BBC detective drana set in Bristol and starring Trevor Eve as private detective Eddie Shoestring, who operatee his own show on Radio West, the local radio station. The programme ran between 30 September 1979 and 21 December 1980, in two series with 21 hour-long episodes. Eve opted not to return after two series, as he wanted to diversify into theatre, so the production team changed the setting to Jersey and created Bergerac, also following a detective returning to work after a bad period in his life.

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.

Zwickelbach & Co

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.

Kowalsky

Die Drei

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).

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

Crime comedy series about an ex-cop who founds an improvised detective school and gives his students real cases to solve.

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.

Tenspeed and Brown Shoe is an American detective/comedy series originally broadcast by the ABC network between January and June 1980. The series was created and executive produced by Stephen J. Cannell.