Delve into the secret underworld of the American Mafia, as told by the criminals who lived it and the law enforcers who hunted it. This dramatic six-part series chronicles the true-life story of the modern Mob in America, as former mobsters, informants, and FBI agents expose the takedown of the deadliest and most infamous organized crime ring in U.S. history. A combination of recently declassified files, first-person accounts by federal officials and the mafioso themselves, and rare archival footage sheds a new light on the raw, violent, and corrupt underworld that gripped America for decades.

Set in 1895, show revolves around the opening of the first luxury hotel in New York City and all the intermingling of love, treachery, and disdain between the classes set against a backdrop of vicious family rivalries, scandalous secrets, and conflict and co-mingling of classes.