When Michael first visits Gina's apartment, she greets him with a glove puppet. This scene at the door is omitted in the episode, although she is still seen to be wearing the puppet as he enters. When he visits her a second time, he asks "No puppets this time?"
The noise when KITT shuts off in the truck is the same noise used when Airwolf pressurizes and depressurizes. At one point, Donald Bellisario (producer/creator of Airwolf) worked under/with Glen A Larson.
Robert O'Reilly is better known to viewers today as a Klingon in various Star Trek series. He and John Vernon previously worked together as master criminal and henchman on an episode of TJ Hooker entitled Matter of Passion.
According to Michael Long's headstone, his full name is Michael Arthur Long. Date of birth, January 9, 1949. Date of death, August 8, 1982.
On the phone to Michael in Gina's apartment, Zachary originally confronted him with details of Michael Long's life in order to make him comply. His uncle lived at 410 Chesapeake Road, while his niece attended the Burnley school; his old police sergeant was named Charlie Hart. None of this information makes it to the episode, leaving him with no ties to his former life.