U.S. Marshals "Nevada" Jack McKenzie and "Sandy" Hopkins go undercover to bust a gang of stagecoach robbers in this vintage Western serial. Nevada infiltrates the gang, while Sandy works as a cobbler in town, keeping an ear open for local gossip as they try to flush out the inside man tipping off the crooks.
| Actor | Role |
|---|---|
 Johnny Mack BrownU.S. Marshal Nevada Jack McKenzie | U.S. Marshal Nevada Jack McKenzie |
 Raymond HattonU.S. Marshal Sandy Hopkins | U.S. Marshal Sandy Hopkins |
 Jan WileyPhyliss | Phyliss |
 Kirby GrantClyde Miller | Clyde Miller |
 Robert FrazerBanker Bradford | Banker Bradford |
 Edmund CobbSlade | Slade |
| AArt FowlerGus, Chief Henchman | Gus, Chief Henchman |
 Hal PricePop Haynes (as Harry F. Price) | Pop Haynes (as Harry F. Price) |
 Marshall ReedHenchman Killifer | Henchman Killifer |
| IIsabel WithersAuntie Mack | Auntie Mack |
 Ben CorbettHenchman Simmons | Henchman Simmons |
 Ted MapesCurly Balou, Stage Driver | Curly Balou, Stage Driver |
 Steve ClarkHenchman Hardy | Henchman Hardy |
 Bud OsborneHenchman Wilson | Henchman Wilson |