John Travers and his Indian companion Yak are after the mysterious Shadow and his gang. When Sheriff Davis is killed, Travers becomes Sheriff. Catching two gang members, he learns of the room where the gang gets their orders from behind a fake wall safe and makes plans to trap the Shadow.
Action | Western | Romance
| John Wayne | … | U.S. Marshal John Travers | |
| Verna Hillie | … | Anita Matlock | |
| George ‘Gabby’ Hayes | … | Matt Matlock (as George Hayes) | |
| Yakima Canutt | … | Yak | |
| Billy Franey | … | Henchman in the Stump | |
| Eddie Parker | … | Henchman Parker (as Ed Parker) | |
| Earl Dwire | … | Henchman Mason | |
| Thomas G. Lingham | … | Sheriff Al Davis (as Tom Lingham) |