Although Mack V. Wright portrayed the Lion Man, it was J. Barney Sherry who was unmasked as his alter ego at the serial's end. This strategy was later used for the Republic serial "The Masked Marvel".
Chapter titles: 1. Flames of Hate 2. Rope of Death 3. Kidnappers 4. A Devilish Device 5. In the Lion's Den 6. House of Horrors 7. Doomed 8. Dungeon of Despair 9. Sold into Slavery 10. Perilous Plunge 11. At the Mercy of Monsters 12. Jaws of Destruction 13. When Hell Broke Loose 14. Desperate Deeds 15. Furnace of Fury 16. Relentless Renegades 17. In Cruel Clutches 18. In the Nick of Time