Mr X Marks the Spot --- (Mr X 4of4)

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The Green Hornet is a superhero created in 1936 by George W. Trendle and Fran Striker, with input from radio director James Jewell.

Wikipedia. CC BY-SA 4.0. Updated Jul 21, 2026.

“Mr X Marks the Spot --- (Mr X 4of4).” The Green Hornet. Radio broadcast, July 19, 1941.