This is the fifth and final appearance Bill Zuckert makes in the series, each time playing a different character. As in this, his last appearance, so too did his first appearance occur in a story that puts Dr. Kimble in a position of saving Lt. Gerard's life.
This is the fourth and final appearance David Sheiner makes in this series, always playing a police officer. He is perhaps best remembered for his role as Roy, the poker-playing accountant, in The Odd Couple (1968).
This is the third and final appearance Elizabeth Allen makes in the series, each time playing a different character. The other two appearances occur in Detour on a Road Going Nowhere (1964) and Terror at High Point (1963).
This is the second of three appearances James McCallion makes in the series, each time playing a different character. The other two appearances occur in End of the Line (1965) and The Shattered Silence (1967).