Grab your shovels and watch your step! A millionaire silver miner, John Schmidt, has been murdered and Marshal Jim Courtright must dig for clues to find out who got the shaft. Might Kit, his wife, be working the mine for her own benefit? Or maybe it was Katherine, the new gentlelady in town with an affinity for rich men and all things silver. Perhaps the eccentric Scotsman McPhiggis was aiming to get revenge. Or could it be the notorious gambler, Snake Eyes Roulette, has more than aces up his sleeves? It’s a safe bet that with a cast of suspects as dangerous as a mine car filled with black powder trouble is bound to explode!