Which Twilight Zone episode was Ray Bradbury's only produced script for the series?

Ray Bradbury’s only produced script for The Twilight Zone was “I Sing the Body Electric.”

The episode aired on May 18, 1962, as the series’ 100th episode. It follows widower Roger Rogers and his three children, who obtain a highly advanced robotic grandmother from the company Facsimile Ltd. The children gradually come to love her, especially after she saves Anne from being hit by a vehicle.

Bradbury had contributed several scripts to The Twilight Zone, but “I Sing the Body Electric” was the only one that reached production. The television script later became the basis for Bradbury’s 1969 short story of the same name. Both titles ultimately come from Walt Whitman’s 1855 poem “I Sing the Body Electric.”

A common mix-up is confusing the episode with “The Electric Grandmother,” a 1982 television film that also adapted Bradbury’s story. The Twilight Zone episode itself is notable for blending science fiction with a family drama about grief, memory, and the meaning of humanity.