The highly revealing pink costume with a shiny trim that Leslie Parrish's character, Linda Marley, wears during the teaser (when she is posing for a sculptor but also is observed through a telescope by the characters played by Paul Mantee and William Windom) is the same outfit she wore during the latter part of Who Mourns for Adonais? (1967). Both "Mannix" and "Star Trek" were produced by Desilu, which later was acquired by Paramount, and both episodes were made during the 1967-68 television season.
Lou wickersham's phone number 311 555-2368 is the same as Jim Rockford's
Ward Wood, who would go on to appear more than 50 times during the run of the series as "Lt. Art Malcolm," makes his debut in this episode. Ironically, although his character already is acquainted with Mannix, this is his only appearance playing a different character, albeit still a police officer ("Lt. Collins").
At on point when Mannix is in the computer room discussing the search for Linda with Parker and Lou he mentions that one day he would like to start an agency of his own.
This is the last episode where he works for Intertec. Starting with season 2 Mannix now has his own one-man private detective agency.
The pink toga worn by Leslie Parrish in this episode of Mannix is the same one she wore on Star Trek.