Harry Potter star Tom Felton shares a throwback video to back when he and his co-stars were just kids playing around on set. The phenomenon that was the Harry Potter films began two decades ago in 2001 with the release of Chris Columbus' Harry Potter and the Sorcerer's Stone, adapted from the 1997 book of the same name (though it was called the Philosopher's Stone in non-U.S.
territories). The main branch of the franchise ran through 2011, concluding with Harry Potter and the Deathly Hallows:
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