Harry Potter and the Sorcerer's Stone
by J.K. Rowling
Filch is the caretaker of Hogwarts. Most of the students, including the Gryffindors, don't like him because he's weird and creepy. He's always looking to catch kids breaking the rules and get them in trouble. He's unforgiving, and he and his freaky cat, Mrs. Norris, are constantly on the prowl for rule-breakers.