The Secret Kingdom
The Secret Kingdom is a 1917 silent action movie serial comprised of 15 chapters: 1. Land of the Intrigue 2. Royalty at Red Wing 3. Sealed Packet 4. Honorable Mr. Oxenham 5. Carriage Call #101 6. Human Flotsam 7. Ghost Ship 8. Rum Cay 9. Swamp Adder 10. A Goat Without Horns 11. The White Witch 12. The Shark's Nest 13. The Tragic Masque 14. The Portrait of a King 15. The Tocsin.
- Year: 1917
- Country: United States of America
- Genre: Adventure, Romance
- Studio: Star Film Company, Vitagraph Company of America
- Keyword: movie serial, presumed lost
- Director: Theodore Marston, Charles Brabin
- Cast: Charles Richman, Dorothy Kelly, Joseph Kilgour, Arline Pretty, William R. Dunn, De Jalma West