Updated: November 29, 2025

Feeling lonely and alienated from her family, Penny finds solace in her friendship with Mr. Nobody, a voice that lives in a cave near a spring. Mr. Nobody is in fact a bodiless life force who becomes fiercely protective of his human friend. Trouble arises when Smith discovers that the jacks Mr. Nobody gave Penny as playthings are diamonds.

Trivia:

This contains the first occurrence of what will become Dr. Smith's most often spoken iconic line: "Oh, the pain, the pain."

Goofs:

As Doctor Smith walks across a sandy area, you can clearly see that the sections that make up the background don't match and you can see the seams in it.

Quotes:

Penny Robinson: Oh Mother, I thought you were the only one. I thought you really believed me, at least just a little bit.

Maureen Robinson: What... Penny! Penny, of course I do! Now, I still do, and you know why? Well, I'll tell you a secret. When I was a little girl, I had a very special friend, too. His name was Mr. Noodles and he lived inside my teddy bear.

Penny Robinson: What?

Maureen Robinson: It's true. I know that you're the only one who'd understand how very real Mr. Noodles was to me.

Penny Robinson: Oh, Mother, that's the silliest thing I ever heard of! How can Anyone live inside a teddy bear?