Ginny Weasley, who sat next to Colin Creevey in Charms, was distraught, but Harry felt that Fred and George were going the wrong way about cheering her up. They were taking turns covering themselves with fur or boils and jumping out at her from behind statues. They only stopped when Percy, apoplectic with rage, told them he was going to write to Mrs. Weasley and tell her Ginny was having nightmares.
Meanwhile, hidden from the teachers, a roaring trade in talismans, amulets, and other protective devices was sweeping the school. Neville Longbottom bought a large, evil-smelling green onion, a pointed purple crystal, and a rotting newt tail before the other Gryffindor boys pointed out that he was in no danger; he was a pure- blood, and therefore unlikely to be attacked.
“They went for Filch first,” Neville said, his round face fearful.” And everyone knows I’m almost a Squib.”
In the second week of December Professor McGonagall came around as usual, collecting names of those who would be staying at school for Christmas. Harry, Ron, and Hermione signed her list; they had heard that Malfoy was staying, which struck them as very suspicious. The holidays would be the perfect time to use the Polyjuice Potion and try to worm a confession out of him.
Unfortunately, the potion was only half finished. They still needed the bicorn horn and the boomslang skin, and the only place they were going to get them was from Snape’s private stores. Harry privately felt he’d rather face Slytherin’s legendary monster than let Snape catch him robbing his office.
“What we need,” said Hermione briskly as Thursday afternoon’s double Potions lesson loomed nearer, “is a diversion. Then one of us can sneak into Snape’s office and take what we need.”
Harry and Ron looked at her nervously.
“I think Id better do the actual stealing,” Hermione continued in a matter-of-fact tone.” You two will be expelled if you get into any more trouble, and I’ve got a clean record. So all you need to do is cause enough mayhem to keep Snape busy for five minutes or so.
Harry smiled feebly. Deliberately causing mayhem in Snape’s Potions class was about as safe as poking a sleeping dragon in the eye.
Potions lessons took place in one of the large dungeons. Thursday afternoon’s lesson proceeded in the usual way. Twenty cauldrons stood steaming between the wooden desks, on which stood brass scales and jars of ingredients. Snape prowled through the fumes, making waspish remarks about the Gryffindors’ work while the Slytherins sniggered appreciatively. Draco Malfoy, who was Snape’s favorite student, kept flicking puffer-fish eyes at Ron and Harry, who knew that if they retaliated they would get detention faster than you could say “Unfair.”
Harry’s Swelling Solution was far too runny, but he had his mind on more important things. He was waiting for Hermione’s signal, and he hardly listened as Snape paused to sneer at his watery potion. When Snape turned and walked off to bully Neville, Hermione caught Harry’s eye and nodded.
Harry ducked swiftly down behind his cauldron, pulled one of Fred’s Filibuster fireworks out of his pocket, and gave it a quick prod with his wand. The firework began to fizz and sputter. Knowing he had only seconds, Harry straightened up, took aim, and lobbed it into the air; it landed right on target in Goyle’s cauldron. Goyle’s potion exploded, showering the whole class. People shrieked as splashes of the Swelling Solution hit them. Malfoy got a faceful and his nose began to swell like a balloon; Goyle blundered around, his hands over his eyes, which had expanded to the size of a dinner plate. Snape was trying to restore calm and find out what had happened. Through the confusion, Harry saw Hermione slip quietly into Snape’s office.
“Silence! SILENCE!” Snape roared.” Anyone who has been splashed, come here for a Deflating Draft. when I find out who did this.”
Harry tried not to laugh as he watched Malfoy hurry forward, his head drooping with the weight of a nose like a small melon. As half the class lumbered up to Snape’s desk, some weighted down with arms like clubs, others unable to talk through gigantic puffedup lips, Harry saw Hermione slide back into the dungeon, the front of her robes bulging.