U.S. Marshals "Nevada Jack" McKenzie and "Sandy" Hopkins, working undercover, investigate a plot to rob a widow and her daughter of a mine which they know to be filled with gold-laden ore, but the widow believes it has played out. A hermit, hanging around the mine and killing, impartially, anyone who enters the mine, impedes the investigation somewhat.
| Actor | Role |
|---|---|
 Johnny Mack BrownNevada Jack McKenzie | Nevada Jack McKenzie |
 Raymond HattonSandy Hopkins | Sandy Hopkins |
 Linda LeightonJenny Durant | Jenny Durant |
 Riley HillDan McLeod | Dan McLeod |
 John MertonSteve Twining | Steve Twining |
 Ray BennettOld Hermit | Old Hermit |
 Claire WhitneyMrs. Durant | Mrs. Durant |
 Marshall ReedBlackie | Blackie |
 Terry FrostMeade | Meade |
 Lynton BrentSkyball | Skyball |
| LLeonard St. LeoHenchman | Henchman |
 Robert BentleyBarton | Barton |