Harry Accuses Draco Malfoy of Involvement in the Necklace Attack to McGonagall

In Hogwarts - Minerva McGonagall's Office, Harry accuses Draco Malfoy of being responsible for the cursed necklace incident. He explains that he saw Malfoy eyeing the necklace in Diagon Alley - Borgin and Burkes. However, McGonagall dismisses Harry's theory, revealing that Malfoy was in detention with her during the Hogsmeade trip and therefore could not have been involved.