Discover an untold chapter of World War II where the lines between good and evil blur in a desperate alliance. 'Operation Underworld' recounts how the American government and notorious Mafia figures joined forces to protect New York Harbor from Axis sabotage and to facilitate the successful invasion of Sicily. At the center of this clandestine collaboration is Charles "Lucky" Luciano, the imprisoned mafia boss whose influence extended far beyond his cell. As U.S. Naval Intelligence, led by Commander Charles Radcliffe Haffenden, taps into the dark networks of La Cosa Nostra, a story of espionage, trust, and betrayal unfolds, revealing a fractious but essential partnership that would alter the course of the war. Matthew Black delves deep into the archives to bring to light this incredible saga of underworld spies, strategic cunning, and the unlikely heroes of a global conflict.