Plot Summary:Peter Brent discovers silver in the Cobalt mining district and sends for Jim Symonds, an acquaintance, to assist in developing the vein. Although the mine proves to be worthless, Symonds sells stock to exploit the local citizens. Brent is buried in a cave-in caused by one of Symond's crooked pals, but a neighbor and her father rescue Brent and he arrives in time to force Symonds to return the citizens' money.