Chapter Titles:
1. Enemy Password
2. The Shadows of the Swastika
3. Nerve Gas
4. The Sea Spy Strikes
5. Wireless Warning
6. Flaming Oil
7. Submarine Patrol
8. The Missing Key
9. The Radio Bomb
10. Blind Bombardments
11. Ears of the Enemy
12. Scourge of the Orient
13. Pawn of the Spy Ring
14. Dead Men of the Deep
15. The Secret Code Smashed
Anne Nagel (Jean Ashley) and Wade Boteler (Police Chief Burns) appeared together in The Green Hornet and The Green Hornet Strikes Again.