More than a decade ago the Red Butte boys had been one of the most powerful and deadly gangs in Arizona Territory; pulling off the Big Springs robbery and netting $50,000 in gold certificates, before disappearing. Since then, no sign of the gang or gold certificates had been seen and it was assumed that the gang were living off the proceeds of the heist, in Mexico. But when one of the certificates surfaces in the town of Bisbee, the bank examiner's office are hoping that the trail of the robbers can be traced. And who better to take on this ghost hunt than the tenacious Laredo?