It was the fall of 1963, and Mario Puzo—a gambler, overeater, and dead-broke pulp fiction writer with outsize artistic ambitions—was glued to his television. Like the rest of America, he was captivated by the widely broadcasted Valachi hearings, in which a Mafia foot soldier publicly revealed the inner-workings of the Italian-American criminal underworld. Puzo also happened to be on the hunt for the subject of his next book, and what could be more appealing to a man who'd grown up surrounded by crooks and hustlers in Hell's Kitchen than a shadowy underworld filled with strongmen and wiseguys? In Episode Two, Mark and Nathan chronicle Mario Puzo's life before "The Godfather," and explain how the writer's chosen subject matter coincided with a growing public interest in the Mafia, resulting in Puzo becoming one of the best-selling authors of his time.