- The Cast Showoff: Besides playing McCall, Stepfanie Kramer also had a career as a singer. She shows this off in an episode where McCall goes undercover as a singer.
- The Danza: Charles Hallahan as Captain Charlie Devane.
- Directed by Cast Member: Fred Dryer, Stepfanie Kramer, and James Whitmore, Jr. (Sgt. Bernie Terwilliger) each directed episodes. Whitmore directed 23 episodes, Dryer directed five episodes, and Kramer directed two episodes.
- Executive Meddling: Dryer and Kramer objected to the season 6 episode "Unfinished Business", where it was revealed that Hunter and McCall slept together, which was included to appease the network and fans. Dryer felt that it turned the show into Hart to Hart.
- Name's the Same: The main character has the same name as the lead in the first part of Robotech, adapted from Hikaru Ichijyo of Super Dimension Fortress Macross.
- The Other Darrin: In the pilot episode, Captain Lester Cain was played by Michael Cavanaugh. For the rest of the character's limited run on the series, the role was played by Arthur Rosenberg.
- Produced by Cast Member: Fred Dryer served as executive producer for the final two seasons.
- Real-Life Relative:
- Tracy Vaccaro, Fred Dryer's wife at the time, guest-starred on the series several times. She was the Playboy Playmate of the Month for October 1983.
- During Roy Huggins' tenure as executive producer, Roy's son, Thomas Huggins, as well as Thomas' wife, Charlotte Clay, served as story editors.
- Recycled Script: Both "Partners" & "Return of White Cloud" have several similarities, namely 1) most of the episode has the detectives focus on someone romantically linked to the victim, 2) an accomplice to the killer calls them and tells them they've gone to far and are going to go to the cops, only to be killed themselves and 3) the killer turns out to be someone who had only appeared for maybe a few minutes beforehand.
- Unintentional Period Piece:
- Wag the Director: Originally, Bernie Terwilliger was supposed to have been Killed Off for Real in season 3. However, Fred Dryer objected, because he and James Whitmore, Jr. were actually close friends in real life. As a result, the script was revised and season 2 character Riley Causland, played by Robert Firth, was brought in to take the fatal bullet. Amusingly, however, Whitmore himself didn't mind either way, and in fact, actually directed the episode in which his character was supposed to have been killed off.
- Kramer also objected to the plot of the season 3 episode "City of Passion", which originally depicted McCall being raped again, and threatened to quit unless the storyline is changed. In the filmed episode, McCall successfully fought off the would be rapist.
- Written by Cast Member: Stepfanie Kramer co-wrote the story for the season 5 episode, "Return of White Cloud".
Trivia / Hunter