Harry Potter 20th Anniversary: Return to Hogwarts is a 2022 English-language Documentary Family film directed by Casey Patterson and Joe Pearlman. The movie originally aired on HBO Max. Harry potter 20th anniversary: return to hogwarts features Daniel Radcliffe, Rupert Grint, Emma Watson, Helena Bonham Carter, Robbie Coltrane, Ralph Fiennes and Julie Walters. The motion picture is based on Harry Potter films by Warner Bros. Pictures. The film has a running time of 102 minutes. It was released on 1st January 2022. An enchanting making-of story told through all-new in-depth interviews and cast conversations, inviting fans on a magical first-person journey through one of the most beloved film franchises of all time.