Execution (The Twilight Zone)

It features Albert Salmi, who also plays the lead character in the Season 4 episode "Of Late I Think of Cliffordville".

Commonplace—if somewhat grim—unsocial event known as a necktie party, the guest of dishonor a cowboy named Joe Caswell, just a moment away from a rope, a short dance several feet off the ground, and then the dark eternity of all evil men.

Mr. Joe Caswell, who, when the good Lord passed out a conscience, a heart, a feeling for fellow men, must have been out for a beer and missed out.

He then flees from the laboratory into a busy street, but is overwhelmed by the lights and the noise: He has manic reactions to a public phone booth, to jukebox and television set at a local bar, and he returns to the lab, distraught and desperate.

The witnesses to the hanging are shocked to see a stranger's body, in strange clothes, in place of Caswell.