Hosted by Academy Award®-winning actress Helen Mirren, Harry Potter: Hogwarts Tournament of Houses celebrates the 20th anniversary of the film and continues the Wizarding World spirit showcasing ultimate fan glory on a never-before-seen scale. 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. The four-night event premieres Sunday, November 28th on TBS and CN.