Some context.
Based on the 1961 short story by famed sci-fi and fantasy writer, Richard Matheson (I Am Legend), “Nightmare at 20,000 Feet” centers on a man who begins to question his sanity during an airplane flight when he seems to be the only one able to see a gremlin tearing up the engine on the wing. In the story, the man—simply named “Wilson”—is flying alone.

The Twilight Zone episode from 1963, Robert Wilson (played by a very young William Shatner) is traveling with his wife after suffering a nervous breakdown. This wrinkle of mental instability was a stroke of storytelling genius from Matheson (he adapted his own story) because it makes the other characters, including Wilson’s own wife (played by Christine White), wary of his claims about a man on the wing. It also makes the audience question whether or not he’s simply hallucinating.
He finally snaps, pilfers a fellow passenger’s gun, opens the emergency door and shoots the gremlin dead. While he’s being carted away at the very end, the camera pans down to reveal that the wing has indeed been damaged, confirming Wilson's insane claims.


Despite the goofy-looking design of the gremlin on the plane, “Nightmare at 20,000 Feet” is one of the most famous (not to mention beloved) pieces of television ever produced. It was later remade by George Miller (Mad Max: Fury Road) for 1983’s Twilight Zone: The Movie and parodied countless times in pop culture.