Heard in the background of the scene where Kimble tells Lois Nettleton's character he must leave is none other than Vin Scully announcing a baseball game.
Four years prior, David Janssen was in the WWII film Hell to Eternity (1960), where he played a marine sergeant, and John Larch was his captain.
The baseball game called by Vin Scully features references to real-life ballplayers Maury Wills, Willie Davis, and Wally Moon (all of whom played for the L.A. Dodgers throughout the early 1960s), as well as pitcher Warren Spahn, who played for the Milwaukee Braves through the end of 1964. The specific events described in the game, however, are fictional and do not match the events of any real-life Milwaukee/L.A. game in which these players were involved.
This is the first of three appearances Lois Nettleton makes in the series, each time playing a different character.
This is the first of three appearances Malcolm Atterbury makes in the series, each time playing a different character, but always in the role of a sheriff. The other two appearances occur in Stroke of Genius (1966) and Approach with Care (1966).