The Master Avenger crushes crime in classic pulp novels by Walter B. Gibson. First, A Mississippi River 'Isle of Doubt' conceals crooks and their ill-gotten wealth, until The Shadow's justice proves to be as inevitable as the flow of the mighty river itself! Then, the specter of death rises over a thriving community, transforming it into a 'Murder Town.' Finally, the restorative waters of Sapphire Springs are claimed to have fabulous curative properties, but could conceal an evil 'Fountain of Death.'
