A silent movie serial consisting of 16 two-reel chapters. 1. Hidden Power. 2. The Mutilated Hand. 3. The Poisonous Tarantula. 4. Plot of a Demon. 5. The Haunted House. 6. The Torture Chamber. 7. Drops of Blood. 8. The Time-Clock Bomb. 9. The Crystal Globe. 10. A Message from the Sky. 11. The Half-Breed’s Hatred. 12. Aeroplane Accident. 13. The Spy and the Submarine. 14. Interrupted Nuptials. 15. The Pay of Death. 16. The Final Strand.
Mazie King, an adventurer, thanks to the good patronage of Mr. Niel, a society man, is invited to a birthday reception. Taking advantage of the opportunity, she lays out her plans to get away with some valuable jewels. Jim O'Bryan, the tool, sneaks in through a side window.
