An inventor exchanges his emotions for intelligence to an alien in order to create a lethal weapon.
Troper of the Purple Twilight:
- Interrupted Suicide: A variation of the trope kickstarts the plot. When high-strung scientist Eric Plummer fails to solve the two equations he needs to complete his matter disintegrator, he's so upset that he gets in his car and starts driving home through the desert at dangerous speeds. Alien invader Ikar suddenly appears in his back seat and says "You gain nothing by suicide." Thanks to Ikar, Eric survives his trip home and the story begins in earnest.
- Voluntary Shapeshifting: Ikar is able to switch between his true form and his human disguise.
- Word Salad Title: The title doesn't relate to anything in the episode, and even the people who worked on the show couldn't remember what it meant!
- You Have to Believe Me!: Happens when Janet discovers Eric is palling around with an alien and tries to warn Mr. Hunt. She even uses the exact phrase.