A 9-part movie serial- 1. The Last Cigarette 2. The Clash of Steel 3. The Dreaded Tube 4. The Crimson Blade 5. The Man in the Trunk 6. The Signet Ring 7. The International Spy 8. The Master Spy 9. The Mysterious Iron Ring.
Directed by Hal Mohr, George Bronson Howard, Jack Wells
