Fridge / The Twilight Zone (1959) S1E26: "Execution"

aka: The Twilight Zone S 1 E 26 Execution

• The story doesn't just begin and end with an execution, but also with presiding men who didn't know at the time how evil their visitor was. It began with the scientist who doesn't know that he's teleported an outlaw from the past. It ends with the men presiding the execution seeing a hanged Paul and not knowing he's a criminal from the future.