Chapter Titles: 1. The Mystery Riders 2. The White Chief 3. Hidden Gold 4. The Silent Doom 5. Murder Will Out 6. The Secret of Iron Mountain 7. The Law of the Lawless 8. Red Phantoms 9. The Invisible Enemy 10. Midnight Magic 11. Unmasked 12. The Trail To Glory

Whenever Kraft and his henchmen go through the secret tunnel, a dotted line is shown over a still picture of the outside of the two buildings. The dotted line represents them going through the tunnel.

An edited/condensed feature version of this serial was released in 1948 by Albert Dezel Productions with a changed title, The Return of Kit Carson, and was played on a double bill with "The Return of the Mohicans", an edited/condensed feature version of Mascot's "The Last of the Mohicans" serial.

Chapter 12, is a budget-saving recap episode where sequences from previous chapter: 2 are shown for most of the running time.

Chapter 4, is a budget-saving recap episode where sequences from previous chapter: 1 are shown for most of the running time.

Chapter 7, is a budget-saving recap episode where sequences from previous chapter: 1 are shown for most of the running time.

Betsy King Ross was an expert champion trick horseback rider. She performed her riding skills at rodeos and circuses. You get to see her perform a few of her stunt riding tricks in Chapter 1.

Chapter 10, is a budget-saving recap episode where sequences from previous chapter: 7 are shown for most of the running time.

Body count: 15 (plus 2 off screen killed)