"Diagnosis: Murder" is an American comedy/mystery/medical crime drama television series starring Dick Van Dyke as Dr. Mark Sloan, a medical doctor who solves crimes with the help of his son Steve, a homicide detective played by his real-life son Barry. The series began as a spin-off of "Jake and the Fatman" (Dr. Mark Sloan made his first appearance in episode 4.19 "It Never Entered My Mind"), became a series of three TV movies, and then a weekly television series that debuted on CBS on October 29, 1993.

The plot centered around Dr. Mark Sloan (Dick Van Dyke), a renowned physician who occasionally worked for the local police department as a consultant, and who could not resist a good mystery or a friend in need. Those cases often involved his son,Detective Steve Sloan (Barry Van Dyke). Helping him was his friend Norman Briggs (Michael Tucci in seasons in 1-4), a hospital administrator.

The series struggled at first and was almost canceled at the end of the second season, but it returned as a midseason replacement in the third season, and was regularly renewed thereafter. 178 episodes were made and aired in the show's eight seasons on the CBS network in the United States and two more TV movies aired after the series' cancellation on May 11, 2001.

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