Randi Kaye goes inside the biggest art heist in history. 13 masterpieces remain missing, 23 years after the robbery at the Isabella Stewart Gardner Museum in Boston.
Don't miss Randi's documentary "81 Minutes: Inside the Greatest Art Heist in History" at 10 p.m. ET this Friday.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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