Chapter Titles:
- 1. The Fifth Column Strikes
- 2. Dead End
- 3. Man Hunt
- 4. Trapped
- 5. Test Flight
- 6. Double Danger
- 7. Death Takes the Witness
- 8. Counterfeit Trail
- 9. Ambush
- 10.Sky Raiders
- 11.Trail of Death
- 12.Code of the Rangers
From Republic Pictures Corporation files: Writers' assignments Norman S. Hall - Chapters 1 and 6 Joseph Poland - Chapters 2, 7 and 11 William Lively - Chapters 3 and 8 Ronald Davidson - chapters 4, 9 and 12 Joseph O'Donnell - Chapters 5 and 10 The above name order is also the writers' order as seem on the film (minus the chapter assignments.)