One of many Pearl White silent action movie serials. CHAPTER TITLES: 1. The Serpent Sign; 2. The Cryptic Ring; 3. The Watching Eye; 4. The Vengeance Of Wu Fang; 5. The Saving Circles; 6. Spontaneous Combustion; 7. The Ear in the Wall; 8. The Opium Smugglers; 9. The Tell-Tale Heart; 10. Shadows Of War.

When multi-millionaire banker John Argyle is found brutally murdered in his home, suspicions are cast upon Mary Mazuret, his adopted daughter who became the sole beneficiary of his estate under his will, Argyle having quarrelled with his son Bruce. Just as the case begins to look black for Mary, Asche Kayton, a great private detective, is called in by Bruce and takes hold of the investigation.