ABC's new documentary "The Story of Diana" is turning the spotlight on Princess Diana's legacy, 20 years after her untimely death.
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It will be the only program in the U.S. to feature an interview with Diana's brother, Charles Spencer.
Watch the video in the player above for ABC's Chris Connelly's sneak peek on "Good Morning America."
The two-part series starts Wednesday, August 9 at 9 p.m. on ABC7.
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New ABC documentary turns spotlight on Princess Diana's legacy
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