Emmy award winner Dick Van Dyke stars as Dr. Mark Sloan, a dedicated doctor who dabbles in detective work. Caring and compassionate, Dr. Sloan enlists the help of his police detective son, Steve (Barry Van Dyke) whenever he suspects one of his patients is the victim of foul play. And he won't rest until the bad guys are put to bed - permanently! Working alongside Sloan is pathologist Amanda Bentley (Victoria Rowell). For star performances and classic "whodunit" suspense, the right prescription is DIAGNOSIS MURDER.