The HBO Max special will see stars Daniel Radcliffe, Emma Watson and Rupert Grint reunited to mark the 20th anniversary since the release of the first Harry Potter film.

The stars will share their memories from the decades-long franchise, which thrust them into the spotlight as children, making them some of the most recognisable stars in the world.

This special four-part event hosted by Helen Mirren will showcase ultimate fan glory on a never-before-seen scale. Wizarding World fans will put their Harry Potter knowledge to the test, for the ultimate honour of being named House Cup champion.

Featuring hundreds of trivia questions and special guest surprises, this unforgettable event of a lifetime will unveil which fans know the vast, intricately detailed universe like the back of their hand as they compete to take home the title of House Cup Champion.

Other cast members set to appear include Robbie Coltrane, who played Hagrid, Tom Felton (Draco Malfoy), Helena Bonham Carter (Bellatrix Lestrange), Gary Oldman (Sirius Black), Matthew Lewis (Neville Longbottom), director Chris Columbus, as well as more stars from all eight movies.