"Jake and The Fatman" (1987-1992)

 

The classic American police series starred the late William Conrad as J.L. 'the fatman' McCabe, a former police detective turned District Attorney,  Joe Penny as his investigator Jake Styles and Alan Campbell as McCabe's assistant district attorney Derek Mitchell. 

The series was a spinoff of the creators' law series, "Matlock". McCabe (McShane initially) and Derek first appeared in the 2 part  Matlock episode, "The Don", which served as its backdoor pilot. The series ran for 5 seasons, changing its location from Los Angeles to Hawaii in Season 2, then returning to L. A few seasons later.