A variety of people are searching for a long-hidden treasure somewhere on an island. Chapters: 1. The Isle of Fear, 2. The Ghost Talks, 3. The Phantom Duel, 4. Buried Alive, 5. The Girl Who Vanished, 6. Trapped by the Flood, 7. The Cannon Roars, 8. The Circle of Death, 9. The Pirate's Revenge, 10. The Crash, 11. Dynamite, 12. The Bridge of Doom, 13. The Mad Flight, 14. The Jaws of Destruction, 15. Justice
Don Terry
Gwen Gaze
Walter Miller
George Rosener
Grant Withers
Hobart Bosworth
Sandra Karina
P.J. Kelly
Yakima Canutt
William Farnum
Joe Caits
Colin Campbell
Dave O'Brien
William Royle
Warner Richmond