There's little debate that Robert De Niro is one of the greatest screen actors of his generation, perhaps of all time. His work -- Mean Streets, The Godfather Part II, Taxi Driver, The Deer Hunter, Raging Bull -- is unparalleled. Yet little is known about the off-screen De Niro. In an elegant and compelling biography that reads like a novel, Shawn Levy portrays Robert De Niro's transition from ambitious young man to enigmatic artist and cultural icon.