What Happened Last Night?

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The Mysterious Traveler was an American media franchise created by Robert Arthur and David Kogan. All versions of the franchise focused on suspense and crime fiction, with occasional elements of horror or science fiction.

Wikipedia. CC BY-SA 4.0. Updated Jan 25, 2026.

“What Happened Last Night?.” The Mysterious Traveler. Radio broadcast, October 2, 1951.