The original cast of the Harry Potter series will be reunited 20 years after the first film to recount their magical journeys.
An HBO Max special titled Return to Hogwarts will be released on January 1, the network said.
Daniel Radcliffe, Rupert Grint and Emma Watson will discuss the films with American filmmaker Chris Columbus and examine their origins in detail.
The special will take fans “on a magical first-person journey through one of the most popular film franchises of all time,” said HBO Max.
The program was announced exactly 20 years after the US release of the first film Harry Potter and the Philosopher’s Stone on November 16, 2001.
A 52-second trailer showed clips from several of the world famous films, promising that “the legendary cast” would return to “where the magic began”.
The trio is joined by other stars such as Helena Bonham Carter, Robbie Coltrane, Ralph Fiennes, Jason Isaacs, Gary Oldman, Imelda Staunton and Tom Felton.
When promoting the trailer, Felton, who played the blonde-haired villain Draco Malfoy, warned fans to save the date.
“Is that what coming home is like at school?” He wrote on Twitter
“Tag your calendar for New Years Day #ReturnToHogwarts, stream on @hbomax x.”
Matt Lewis, known for his portrayal of the hapless Neville Longbottom on the show, wrote, “This New Years Day … we’re going to put the band back together.”
Executive Producer Casey Patterson said, “With this incredible cast, there’s magic in the air as they all return home to the original sets at Hogwarts, where they started 20 years ago.
“The excitement is palpable as they prepare to take their fans on a very special and personal journey through the making of these incredible films.”
It comes as Radcliffe said in a BBC documentary that is also celebrating 20 years since the first film was made of his joy that a lot of people watch the Harry Potter films when they are “hangover and really feel like shit”.
The 32-year-old said, “The time in most people’s lives when they discovered it meant that it holds an incredibly important place in many people’s childhood and they still feel very protective.
“One of my favorite destinies that we could never have imagined for the Harry Potter films, but I’ve been told by several friends, is that when people are hungover and really feel shitty, they’re fantastic.
“They just watch a few movies at a time and that just takes them to a place of warmth and comfort.
“This is so nice for me. That’s the real impact a film can have on someone’s life. I think that’s great. “
In the documentary as part of Movies With Ali Plumb, Radcliffe also paid tribute to writer JK Rowling, who added the Fantastic Beasts film series to the Potter universe, starring Eddie Redmayne.
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