Diana Muldaur later returned to the franchise to portray the role of Doctor Pulaski. It was not Sandra Smith/Janice Lester (Kirk’s ex) who ended up also portraying a new character as you say. It was Diana Muldaur/Miranda Jones (the Medusan’s escort).
Janice Lester (portrayed by Sandra Smith) traded bodies with Kirk in an attempt to be captain in the season 3 finale “Turnabout Intruder”.
But pictured in this post here is the Medusan ambassador’s escort Miranda Jones (portrayed by Diana Muldaur) from “Is There in Truth No Beauty?”
Diana Muldaur later returned to the franchise to portray the role of Doctor Pulaski. It was not Sandra Smith/Janice Lester (Kirk’s ex) who ended up also portraying a new character as you say. It was Diana Muldaur/Miranda Jones (the Medusan’s escort).
Ah, thanks!
Can’t trust my memory.