Diagnosis: Murder is an American 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 Van Dyke's real-life son Barry.

The first eight episodes of the series were also shot (and set) in Denver, before quickly (and without explanation) shifting to Los Angeles for the remainder of the show's run.

Since 1997, reruns of the show have been shown in syndication and on Freeform (formerly ABC Family and originally CBN Satellite Service), Ion Television (formerly PAX-TV), Hallmark Channel, 10 Bold, CBS Action and MeTV.

After his service ended, Dr. Sloan became a renowned physician and began consulting with the local police, and found himself unable to resist a good mystery or a friend in need.

Cases often involved his son, Detective Steve Sloan (Barry Van Dyke), and Norman Briggs (Michael Tucci in seasons 1–4), a hospital administrator and a close friend of his.

Over the run of the show, various episodes guest starred at least eight different members of the Van Dyke family: The first season’s filming commenced in July 1993 in Denver, Colorado.

Much of the cast as well as the production company personnel from Viacom stayed in the (then) Embassy Suites Hotel in downtown, located at 19th Street between Curtis and Arapahoe.

In and around the Embassy Suites Hotel at that time, it was not unusual to see several semi-trailers parked street-side in support of the production at various office or exterior locations in and around downtown Denver.

While the Perry Mason series was often filmed in a special courtroom constructed for the production within The Denver City and County Building, Diagnosis: Murder was temporarily set at the then recently closed St. Luke’s Hospital on 19th Street just east of downtown.

When Raymond Burr became terminally ill later that summer, he no longer was seen at the hotel after having filmed his last episode, The Case of the Killer Kiss.

Upon completion of that filming, Viacom and the entire production company left Denver in late September, early October 1993, including that of Diagnosis: Murder.

Thus, only the Diagnosis: Murder episodes filmed from mid-July through September 1993 were shot in Denver, after which production shifted permanently to Los Angeles.

The Marriott Hotels & Resorts in Woodland Hills, Los Angeles, was used as the exterior of Community General Hospital in the final three seasons of the show.

List of Administrators at Community General Hospital BBQ Bob's is a restaurant that Jesse Travis and Steve Sloan co-own starting in the sixth season.

On September 12, 2006, CBS Home Entertainment (with distribution by Paramount Pictures) released the complete Season 1 of Diagnosis: Murder on Region 1 DVD.

On December 31, 2012, it was announced that VEI had acquired the rights to the series (via their sublicensing deal with CBS) and planned on releasing the remaining seasons on DVD in 2013.

The books are, in order: The Past Tense is a prequel to the episode "Voices Carry", which guest-starred Jack Klugman as Harry Trumble, and chronicles Dr. Mark Sloan's first homicide investigation.