The students head to Hogsmeade

On the morning of the Hogsmeade visit, Harry, Ron, and Hermione join the line of students being checked by Filch before heading into the village. Harry recalls that without Sirius's permission, he wouldn't be able to go at all. Filch gives Harry a suspicious sniff as he passes, causing Harry to tell Ron and Hermione about his run-in with Filch when sending a letter to Sirius. Hermione finds this story particularly intriguing, and she speculates on who could have tipped Filch off, suspecting Draco Malfoy.