Robert De Niro's returns to the mob movie genre with "The Alto Knights," and it's hitting theaters on Friday. De Niro pulls double duty in the biographical drama, as he stars two of New York's most notorious crime bosses,

The great veteran of Mafia roles, cast as the rival bosses Frank Costello and Vito Genovese, anchors Barry Levinson’s exploration of mid-century Mob life.

Robert De Niro is renowned for his Mafia heavies, but in "The Alto Knights," he plays two real-life Mob bosses, Frank Costello and Vito Genovese.