Harry Potter 20th Anniversary: Return to Hogwarts | Official Trailer .

Announced last month, Harry Potter 20th Anniversary: Return to Hogwarts invites fans on a magical first-person journey through one of the most beloved film franchises of all time as it reunites Daniel Radcliffe, Rupert Grint, Emma Watson, and other esteemed cast members and filmmakers across all eight Harry Potter films for the first time to celebrate the anniversary of the franchise’s first film, Harry Potter and the Sorcerer’s Stone.

Additional Harry Potter film alumni joining the memorable tribute include Helena Bonham Carter, Robbie Coltrane, Ralph Fiennes, Jason Isaacs, Gary Oldman, Tom Felton, James Phelps, Oliver Phelps, Mark Williams, Bonnie Wright, Alfred Enoch, Ian Hart, Toby Jones, Matthew Lewis, Evanna Lynch, producer David Heyman and filmmakers Chris Columbus, Alfonso Cuarón, Mike Newell and David Yates.

Harry Potter 20th Anniversary: Return To Hogwarts Streaming New Year's Day