The Devil in the Dark
The Devil in the Dark (Memory Alpha; SD Video) is your standard monster of the week episode: Janus VI is a sparsely-populated mining colony and the miners are dying, eaten alive by chemical spew. The Enterprise is called in, and searches for the monster. They find it, they hurt it. There’s a little twist that they foreshadow heavily, and the episode ends with gumdrops and rainbows. There is no content to discuss, and no subtext to plumb.
Grade
D; it does what it does well, it’s just that what it does is kind of lame.