Criminals steal a radium-powered tank from an inventor. His heiress and a government agent take up the chase. 18 episode serial-1. The Mystic Stone, 2. The Death Trap, 3. The Fatal Ride, 4. The Swing for Life, 5. The Torture Chamber, 6. The Tunnel of Doom, 7. A Flash in the Dark, 8. In the Clutches of a Mad Man, 9. The Roaring Volcano, 10. Creeping Flames, 11. Perils of Doom, 12. Shackled, 13. The Scalding Pit, 14. Hemmed In, 15. The Flaming Arrow, 16. Over the Cataract, 17. The Wheels of Death, 18. Liquid Flames.

A train that is carrying the formula for a valuable form of granulated gasoline disappears before it reaches its destination. Railroad investigators and the authorities try to determine where it is and who took it.

The heroine thinks she is the daughter of a bandit, but instead she is the sheriff's daughter.

A silent movie serial now lost. CHAPTER TITLES: 1. Circumstantial Evidence; 2. A Double Steal; 3. Inside Treachery; 4. A Race for a Fortune; 5. A Woman's Wit; 6. The Overland Disaster; 7. Mistaken Identity; 8. A Knotted Cord; 9. A Leap for Life; 10. A Watery Grave; 11. A Desperate Deed; 12. A Fight for a Franchise; 13. The Road Wrecker; 14. The Trap; 15. The Mystery of the Counterfeit Tickets.