Diagnosis Murder

Tonight’s episode of Diagnosis Murder pits Dr. Mark Sloan (Dick Van Dyke) against a cold case that has haunted his old friend for decades. Private‑eye Joe Mannix (Mike Connors), fresh from a cameo‑filled career, shows up at Sloan’s doorstep with a file on a 1973 murder that was never solved. Sloan agrees to help, pulling his forensic know‑how into the gritty world of 1970s police corruption. As they dig through old precinct records, interview reluctant witnesses, and chase a trail of bribed officials, the pair discover that the original killing was tied to a city‑wide graft scheme. Tension rises when the current police chief warns them to back off. By the episode’s close, Sloan’s sharp eye and Mannix’s street instincts crack the case, delivering justice to a family that has waited 25 years. Guest star Connors brings a weary charm that makes the unlikely partnership work. (45 min, TV‑PG).