Once, Michael O'Sullivan was the "Angel of Death," the Irish mob's most feared enforcer. Once, his son was an innocent youth. Now neither is what he once was. Tragedy has brought them together on a mission of vengeance, one that takes them through America's heartland to rob banks of funds hidden there for safe-keeping by Chicago Gangland. Max Allan Collins returns with a captivating story set between the pages of the original ROAD TO PERDITION.