Investigating mail service irregularities near Carson City, Lowrey and his sidekick Arkansas (Arthur Hunnicutt) combat outlaws led by Ed Kendall who threaten to disrupt the region, blending traditional western action with intrigue.
| Actor | Role |
|---|---|
 Charles StarrettSteve Lowrey | Steve Lowrey |
 Shirley PattersonGail Holloway | Gail Holloway |
 Arthur HunnicuttArkansas (as Arthur 'Arkansas' Hunnicutt) | Arkansas (as Arthur 'Arkansas' Hunnicutt) |
 Jimmie DavisBand Leader and Singer Jimmie Davis | Band Leader and Singer Jimmie Davis |
 Clancy CooperEd Kendall | Ed Kendall |
 Davison ClarkBob Holloway | Bob Holloway |
 Minerva UrecalWidow Humbolt | Widow Humbolt |
 Edmund CobbSheriff | Sheriff |
 Ethan LaidlawWoods | Woods |
 Art MixHenchman Burgess | Henchman Burgess |