The cliffhanger for Chapter 10, "Death Strikes at Seven", is stock footage from Columbia's Phantom Gold (1938) western, also produced by Larry Darmour Productions.
CHAPTER TITLES: 1. Trouble in Canyon City (PCA #8151); 2. The Mystery of Ghost City (PCA #8152); 3. Danger Walks By Night (PCA #8153); 4. Hillside Horror (PCA #8154); 5. Guns in the Night (PCA #8155); 6. The Bottomless Well (PCA #8156); 7. The Man in the Gold Mask (PCA #8157); 8. When the Devil Drives (PCA #8158); 9. The Traitor's Shroud (PCA #8159); 10. Death Strikes at Seven (PCA #8160); 11. Satan in the Saddle (PCA #8161); 12. The Mine of Missing Men (PCA #8162); 13. Danger on Dome Rock (PCA #8163); 14. The Door That Has No Key (PCA #8164); 15. Empire's End (PCA #8165).
Opening theme music is "The Ride of the Valkyries" by Richard Wagner (I).