Alastor Moody: The Goblet of Fire is an exceptionally powerful magical object. Only an exceptionally powerful Confundus Charm could’ve hoodwinked it. Magic way beyond the talents of a fourth year.
Igor Karkaroff: You seem to have given this a fair bit of thought, Mad-Eye.
Alastor Moody: It was once my job to think as dark wizards do, Karkaroff… perhaps you remember.
From Harry Potter and the Goblet of Fire (2005) | Produced by Warner Bros.
