"The Twilight Zone" - Season 1 Episode 3 - "Mr. Denton on Doomsday "

The television Western was an extremely popular form, and for a lot of reasons. There was rustic scenery, horses, clear rules of right and wrong and the continual challenge of life and death. It was also, as the Space Age was beginning in earnest, a throwback to a time when some could find a kind of comfort in the simplicity of what all that represented. It was only natural for Rod Serling to explore the Western landscape with his unique vision. This was his first venture into that setting.

( ***SPOILERS ABOUT THIS EPISODE MAY BE REVEALED*** )