Amos and Chief Bill Gillespie talk about Bill taking his late wife, Anna, to Italy for two honeymoons. Carroll and Nancy O'Connor adopted their son Hugh O'Connor (Lonnie Jamison) from Italy.
When Tibbs goes up into the treehouse, he finds a picture of Roy Chandler and Nelson Haber together. Interestingly, these two actors, Ken Strong and Judson Vaughn, would appear together again in RoboCop 3 (1993) (1993). Also interesting, Anne-Marie Johnson starred in her own robotic sci-fi, Robot Jox (1989) (1989).