Bill Drake has restarted the Ghost Canyon gold mine. He claims he bought it from Hank Nolan before he died, but Nolan's daughter Milly says he left the mine to her. Gene goes with Milly to the mine, where it turns out that the gold being shipped has all been stolen and melted down into new ingots.; Royal Rollins employs ex-cons from nearby Graystone Prison on his ranch. The sheriff at neighboring Eagle Mesa sends for Gene to help him break up a band of rustlers. The rustlers plant evidence to throw the blame on Rollins' ex-cons.; Anton Burke, a railroad official, calls on Gene for help in solving a series of train robberies that occur at night at a dusty pass. The steady wind wipes out all tracks, making it impossible to follow the robber's trail.