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.
| Actor | Role |
|---|---|
| KKingsley BenedictYorke Norroy | Yorke Norroy |
 Jay BelascoCarson Huntley | Carson Huntley |
 Vola ValeMinna Ober (Episode #1) | Minna Ober (Episode #1) |
 Claire Du BreyPrincess Seraphina (Episode #2) | Princess Seraphina (Episode #2) |
 Jean HersholtPrince Feodor (Episode #2) | Prince Feodor (Episode #2) |
 Lee ShumwayCount Stefan (Episodes #2, 3) | Count Stefan (Episodes #2, 3) |
 Elsie Jane Wilson(Episode #3) | (Episode #3) |
 Francis McDonald(Episode #3) | (Episode #3) |
| MMalcolm BlevinsMr. Ober (Episode #1) | Mr. Ober (Episode #1) |
| CClyde BensonSaxonian Chief (Episode #1) | Saxonian Chief (Episode #1) |
| FFrancis MarionPrince Paul (Episode #2) | Prince Paul (Episode #2) |