Mimi Rogers (Barbara Anderson) romances Joseph Conrad (William Shatner) as part of the IM Force's plan. This is a reversal of their roles in The Conscience of the King (1966), in which Shatner's Captain Kirk romanced Anderson's Lenore Karidian as part of an investigation.
Some Star Trek (1966) sound effects can be heard in the background during the cocaine laboratory sequence.
The absence of Casey (Lynda Day George) is explained to the IM Force by Phelps, who reports she in Europe and has verified that the drug smugglers do not know the appearance of the nightclub owner whom Phelps will be impersonating in this mission. Barbara Anderson (Mimi) replaced Casey for nine episodes during George's pregnancy.
Barbara Anderson is impersonating a woman named Candy Collins who works at a key club that is supposed to remind the viewer of the Playboy Club. Candy is often a nickname for Candice. Seven years after this aired, Candace Collins was the December 1979 Playmate, who was noticed as a possible Playmate because she was a Bunny at a Playboy Club.
A key club a private nightclub admitting only members and their guests, the members often being given door keys to the club.