I’ve rewatched “The Lights of Zetar” (Star Trek: The Original Series, season 3, episode 18). And it tells about a race of aliens which bodies were totally destroyed and they search for bodies to live in (Spoilers!) – that’s why they killed everybody on Memory Alpha (the most full Federation library, and yes I only know understood why is Star Trek Wiki called that way) and tried to take a body of a science lieutenant which was heading to that library onboard of Enterprise. Well, when they realized it, they managed to save her. Another part of the plot is Mr Scott being in love with her and behaving very sweet.















