Lt. Gerard describes the car that Ray drives as a 1961 Porsche Roadster, license # 2U6-987. Never discussed is Donna's car that: a 1963 Ford Galaxie 500 XL 4-door sedan, license # 8P5-649.
The character Leonard Taft, Dr. Kimble's brother-in-law, appears in the series for three different storylines and is each time played by a different actor. The first time occurs in this episode and James Sikking plays the role; the second time occurs in Running Scared (1966), played by Lin McCarthy; the third time occurs in the series' two-part finale The Judgment: Part I (1967) and The Judgment: Part II (1967), played by Richard Anderson.
This is the first of three appearances James Nolan makes in the series, each time playing a different character. The other two appearances occur in Trial by Fire (1965) and The Judgment: Part I (1967).