Ten years prior to this, Charles Bronson was a guest star on David Janssen's first series, The Pete Rocco Case (1957).
Charles Drake and Anne Francis play lovers who have embezzled and are on the run from the law. Eight months later, they would again play embezzlers on the run in The Saucer (1967) from the second season of The Invaders (1967), another Quinn Martin production.
In contrast to this role, wherein she is being watched by undercover federal agents, just before appearing in this series, Anne Francis played a private detective, often undercover, in the titular role of her own, albeit short-lived, series Honey West (1965).
This is the third and final appearance Harlan Warde makes in the series, each time playing a different character. The other two appearances occur in The 2130 (1966) and Death Is the Door Prize (1966).
Guest stars Charles Drake and Anne Francis would team up as another husband/wife duo in another Quinn Martin production in the same 1967 year. In the second season of The Invaders, the duo are fleeing the country after he embezzled some money.