Chapter Titles:
- 1. Untamed
- 2. The Chasm of Death
- 3. The Doom Riders
- 4. Vigilante Law
- 5. The Silent Call
- 6. The Heart of the Mystery
- 7. The Battle of the Strong
- 8. The Missing Witness
- 9. The Showdown
- 10.The Death Trap
- 11.Wild Loyality
- 12.The Double Decoy
The horse that played the title role was named Rex, and he actually WAS a "devil horse" - wild, vicious and tremendously aggressive, he had killed one of his trainers several years before this picture was made. Stuntman Yakima Canutt, doubling for Harry Carey, had to try to ride him in a scene, and knew that it would be virtually impossible to stay on the horse for more than a few seconds, so he instructed the wranglers to tie his wrists and ankles around the horse's neck and let go. When you see that footage in the film, Rex is not trying to throw Canutt off - he's actually trying to kill him.