The individual chapters were: 1. The Bank Mystery; 2. The Mysterious Message; 3. The Warning; 4. The Fight; 5. Plunder; 6. The House of Mystery; 7. Caught in the Web; 8. The Double Floor; 9. The Pearl Necklace; 10. Shadows; 11. The Flaming Meteor; 12. The Poisoned Ring; 13. The Tightening Snare; 14. At Bay; 15. The Duel; 16. From Out of the Past.