Director Martin Scorsese and actors Al Pacino and Robert De Niro talk with correspondent Lee Cowan about their first-ever collaboration, "The Irishman," the true story of Frank Sheeran, a hit man for a Philadelphia crime family. The mob epic, which spans decades, was created using cutting-edge technology to "de-age" its cast, as it traces a story of loyalty and corruption, and explores the fate of Teamsters Union president Jimmy Hoffa.

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