Richard Matheson’s “Little Girl Lost”, a 1962 episode of The Twilight Zone, was inspired by a frightening incident involving his young daughter, who had slipped beneath her bed and briefly seemed impossible to find. Matheson transformed that ordinary parental panic into a science-fiction story in which a child disappears through a portal, making the episode enduringly unsettling because its emotional core remains recognisable.

The episode follows Chris and Ruth Miller as they hear their daughter Tina calling from her bedroom, yet cannot locate her; their dog also vanishes while searching for her. A physicist friend identifies a portal to a possible fourth dimension, but the danger intensifies when the portal begins closing while Chris tries to rescue Tina and the dog. Strong performances and a clear explanation of the science-fiction premise helped make the 25-minute episode memorable, while its premise later invited comparisons with films such as 1982’s Poltergeist.