Star Trek TOS: Episode 73 - THE LIGHTS OF ZETAR

Dumb. Predictable. A cute female crew member that gets taken over by an alien light being. Scotty is obsessed with her and it just comes of as awkward and creepy. The only interesting part of this episode is the introduction of Memory Alpha. This is basically an entire information library that is open to all species. Anyone can visit the planet and access the data, it has no defenses. But, boy season three is terrible.

ST TOS COUNTDOWN: 74 down 6 to go