WATCH: New documentary shows John F. Kennedy Jr.'s final days

WATCH: New documentary shows John F. Kennedy Jr.'s final days https://s.abcnews.com/images/GMA/181226_gma_marciano_hpMain_16x9_992.jpg

WATCH: New documentary shows John F. Kennedy Jr.'s final days

Now Playing: 'The Last Days of JFK Jr.' airs Thursday, January 3rd at 9/8c on ABC

Now Playing: New documentary shows John F. Kennedy Jr.'s final days

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