Heath Ledger's sister lays those Joker rumors to rest

For years, the role that won Heath Ledger his posthumous Oscar in 2009 was thought to be the role that killed him. Ledger died in 2008 of a drug overdose after filming The Dark Knight and allegedly immersing himself in the twisted role (a technique Jared Leto would later adopt). At a screening of the upcoming I Am Heath Ledger at Tribeca Film Festival, Ledger's sister addressed the intense toll of the part — or lack thereof.
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