By the time of the series' final season, Kate Jackson was receiving the most fan mail of all cast members.
Sam Melville, who played police officer and husband Mike Danko, to Kate Jackson's wife and nurse Jill Danko on this show, later played ex-husband Joe King to Jackson's title character Mrs. Amanda King on "Scarecrow and Mrs. King (1983)."
Was satirized in Mad Magazine as "The Rookers".
Kate Jackson and Gerald S. O'Laughlin appeared in all episodes other than the pilot, each taking over from a different actor in the roles of Jill Danko & Sgt./Lt. Ryker respectively.
When the syndicated reruns of this series were distributed in the late '70s, it was available in both hour-long and mutilated 30-minute formats.