Episode titles:
- 1. The Great Gamble
- 2. The Clock of Doom
- 3. Into the Chasm
- 4. In the Law's Grip
- 5. Draught of Death
- 6. Out of the Clouds
- 7. The Crawling Menace
- 8. The Ring of Fire
- 9. Through Iron Doors
- 10. Written in Blood
- 11. The Stolen Identity
- 12. The Wolf Pack
- 13. Barriers of Flame
- 14. Under Arrest
- 15. Out of the Shadows
The film was reedited into 12 episodes in France:
- Episode 1: Les deux jumelles
- Episode 2: Un plongeon fantastique
- Episode 3: Le saut du précipice
- Episode 4: La vengeance de Blake
- Episode 5: Le narcotique
- Episode 6: Tombé du ciel
- Episode 7: Livrée aux caïmans
- Episode 8: L'enlèvement
- Episode 9: La substitution
- Episode 10: Dans les griffes du fauve
- Episode 11: Accusée
- Episode 12: À chacun son dû
Debut of actress Laura La Plante.