Harry Potter fans can head back to the cinema soon to watch the third film, Harry Potter and the Prisoner of Azkaban, and celebrate its 20th anniversary but it seems muggles are still discovering Easter eggs after all this timeHarry Potter fans can head back to the cinema soon to watch the third film, Harry Potter and the Prisoner of Azkaban, and celebrate its 20th anniversary but it seems muggles are still discovering Easter eggs after all this time