This is the only time in the series where Jaclyn Smith plays a character (uncredited) other than Kelly Garrett.
The car Kevin St. Clair can be seen driving is a Stutz Bearcat, which at the time was the most expensive production car in the world.
Kelly remarks to Jill, "You're over the hill at 24." When this episode originally aired on October 13, 1976, Farrah Fawcett was 29 and Jaclyn Smith a few days shy of 31.