The Outer Limits1963

[Trent is talking to Consuelo about the Kyben lying unconscious in front of them]

Trent:
This is going to sound insane, but it's true, it's real, and you must listen to me. This is not a human being. He's from another planet, another solar system. He wants to kill me. He and the others like him. There's more, much more, but, uh, I have to get you to believe me, and there's only one way to do it. Now watch.

[Grabbing the medallion around the Kyben's neck, Trent rips it off, and the alien vanishes]

Consuelo:
Gone! Where?

Trent:
[dropping the medallion on the floor] Doesn't matter where. Just gone. Now do you believe me?