The Criminal Investigator

Dempsey and Makepeace is a British television crime drama made by London Weekend Television for ITV, created and produced by Ranald Graham. The leading roles were played by Michael Brandon and Glynis Barber, who later married each other on 18 November 1989. The series combined elements of previous series such as the mis-matching of British and American crime-fighters from different classes as seen in The Persuaders! and the action of The Professionals.

Jack Regan, an unethical officer of the Flying Squad, uses unorthodox methods to pursue criminals with the help of his partner, George Carter.

Hunter is an American police drama television series created by Frank Lupo, and starring Fred Dryer as Sgt. Rick Hunter and Stepfanie Kramer as Sgt. Dee Dee McCall, which ran on NBC from 1984 to 1991. However, Kramer left after the sixth season to pursue other acting and musical opportunities. In the seventh season, Hunter partnered with two different women officers. The titular character, Sgt. Rick Hunter, was a wily, physically imposing, and often rule-breaking homicide detective with the Los Angeles Police Department. The show's main characters, Hunter and McCall, resolve many of their cases by shooting dead the perpetrators. The show's executive producer during the first season was Stephen J. Cannell, whose company produced the series.

Danger Man is a British television series which was broadcast between 1960 and 1962, and again between 1964 and 1968. The series featured Patrick McGoohan as secret agent John Drake. Ralph Smart created the programme and wrote many of the scripts. Danger Man was financed by Lew Grade's ITC Entertainment.

Mannix is an American television detective series that ran from 1967 through 1975 on CBS. Created by Richard Levinson and William Link and developed by executive producer Bruce Geller, the title character, Joe Mannix, is a private investigator. He is played by Mike Connors. Mannix was the last series produced by Desilu Productions.

Streetwise Detective David Starsky partners up with a more intellectual partner, Kenneth 'Hutch' Hutchinson, to protect citizens and patrol the streets of Bay City.