So I'm watching an episode of MANNIX this morning, and what do I find? Leslie Parrish in what looks like the very same costume she'd worn in "Who Mourns For Anonais?"
http://i558.photobucket.com/albums/ss30/HGN2001/Screencaps/LeslieParrishMNX.jpg
The MANNIX episode is "The Girl In The Frame" and is the final episode on the Season One DVD set.
Harry
Seeing that MANNIX was also produced by Desilu/Paramount and was made at the exact same time as STAR TREK I'm not surprised.
The only thing that surprised me was that Ms. Parrish is actually wearing the exact costume she wore in STAR TREK.
I can understand actors rotating around from series to series, and costumes, sets, etc., being used mutliple times on various series. What's surprising here is the confluence of Ms. Parrish wearing the SAME costume in two different shows.
Her STAR TREK would have been done early in the 1967-1968 season, while her MANNIX appearance was months later toward the end of that season.