Pennsylvania, 1956. Frank Sheeran, a war veteran of Irish origin who works as a truck driver, accidentally meets mobster Russell Bufalino. Once Frank becomes his trusted man, Bufalino sends him to Chicago with the task of helping Jimmy Hoffa, a powerful union leader related to organized crime, with whom Frank will maintain a close friendship for nearly twenty years.

A con man on the run from a vicious gangster takes cover from his past by assuming the identity of his prison cellmate, Pete, “reuniting” with Pete’s estranged family, a colorful, dysfunctional group that threatens to drag him into a world just as dangerous as the one he’s trying to escape - and, just maybe, give him a taste of the loving family he’s never had.

In cases ripped from the headlines, police investigate serious and often deadly crimes, weighing the evidence and questioning the suspects until someone is taken into custody. The district attorney's office then builds a case to convict the perpetrator by proving the person guilty beyond a reasonable doubt. Working together, these expert teams navigate all sides of the complex criminal justice system to make New York a safer place.