Rupert Grint can't watch Harry Potter movies later than Prisoner of Azkaban
The actor told an interviewer that he can detach himself from his younger self in the first films
Guillermo del Toro helped convince Alfonso Cuarón to direct Harry Potter and the Prisoner of Azkaban
The 'Roma' director hadn't even read J.K. Rowling's books until a profanity-laced tirade from his friend
Harry Potter: Marauder’s Map designers reveal what they snuck into the film
'Harry Potter' designers discuss making maps, horcruxes, and more in week 3 of EW’s BINGE podcast
