Patty Duke and William Schallert played daughter and father in The Patty Duke Show (1963). Even though Schallert was 24 years older than Duke, both passed away within two months of each other in 2016, her at age 69 and him at age 93.
Final appearance of Tony Lo Bianco as Det. Calabrese- Lo Bianco would appear one more time in the series as another character in Firebird (1976). He would also return as another detective in Police Story: The Freeway Killings (1987) a dozen years later. His usual partner Bert Jameson, played by Don Meredith, was not present here, but he was referenced by Calabrese while at the gun range- he commented he had been out drinking with Bert the night before.