Based on a real radio show in which unsolved crimes were reenacted in the hope of catching the criminals. However, the only thing this serial took from the "Gang Busters" radio show was the call signal and the title; the story was both an original one and completely fictional.
Chapter Titles: 1. The League of Murdered Men, 2. The Death Plunge, 3. Murder Blockade, 4. Hangman's Noose, 5. Man Under Cover, 6. Under Crumbling Walls, 7. The Water Trap, 8. Murder By Proxy, 9. Gang Bait, 10., Mob Vengeance, 11. Wanted At Headquarters, 12. The Long Chance, 13. Law and Order