When two-time Oscar winner Robert De Niro agreed to play Frank Costello, the diplomatic mob boss at the center of the new film "The Alto Knights," there was another crucial question left to answer: Who would play Costello's childhood friend turned enemy, mobster Vito Genovese?

For the first time in his career, the 81-year-old Oscar winner plays two leading roles in the same film: mafiosos, friends and rivals Frank Costello and Vito Genovese in “The Alto