One of the most popular and oft-referenced Twilight Zone episodes, with William Shatner as a mentally unstable airline passenger who struggles with hallucinations of some awful creature tearing apart the plane. Naturally, his concerns go unheeded by crew and fellow passengers alike, and when the plane lands he is escorted away in a straitjacket. But once he has left the premises, the crew discovers someone or something was indeed tampering with the airplane's engine during the flight.
A spaceship crash on what appears to be an asteroid leaves four survivors. With survival materials—namely water—in short supply, tensions quickly rise and one of the survivors reaches his breaking point and kills the other survivors. He sets out with all the water for himself, only to realize they crashed in the desert just outside Reno, Nevada.
"Time Enough At Last" sees a man who cannot get any alone time to read until he finds a comfortable place in the vault of the bank where he works. Suddenly, a nuclear blast goes off, killing everyone in the area but him. As he excitedly runs to the library to gather more books, his glasses fall off his face, break and render him unable to read.
Seen through the eyes of a military scientist, the world is on the cusp of nuclear war. The scientist and a friend resolve to secretly stock a military spaceship with survival supplies and leave with their families when the time comes. As nuclear war seems imminent, they take control of the vessel—with some resistance—and set the course for a planet suitable for them to live; a place the locals call Earth.
In this bizarre whodunnit, two police officers interrogate a diner full of bus passengers as they believe one is the pilot of a UFO from Mars that crashed nearby. Each passenger—even couples—grow ever more suspicious of one another until the bus is cleared to leave. Later, one of the passengers returns to the diner alone and reveals to the diner's cook his third arm as he was the Martian all along, while the cook reveals his third eye, as he is from Venus.
When aliens arrive on Earth, humanity struggles to learn their true intentions. When a cryptologist translates the title of a book in the aliens' possession as "To Serve Man," everyone breathes a sigh of relief. But as he translates more of the book, he discovers a horrifying truth: it is, in fact, a cookbook and the aliens intend to eat the people of Earth.
A heavily bandaged woman is anxiously awaiting the results of her latest cosmetic treatment as her doctor and nurse—cast in shadow—discuss her grim fate if they have not successfully fixed her severe disfigurement. When the time comes, she is revealed to be a conventionally attractive woman, yet the medical practitioners have failed. Finally, the viewer sees the doctor and nurse clearly: they have piglike faces and to our own eyes, it is they who are the disfigured ones.