There's a website that lists "best of's" in several categories from old time radio. This episode was listed as having the best twist ending of all time in otr, and I wholeheartedly agree. Coolest part? It can ONLY work outside of visual media. It relies on the fact that you're listening, and not watching. Think about it. Just a fantastic ending, and I pity anyone who listens and doesn't see it through to thr end.