Cassia Potter, Harry's twin sister, has been waiting for the day to leave Privet Drive, eager to explore the world. She gets her wish when two letters arrive in the post addressed to her and Harry. They soon are whisked off to Hogwarts to learn magi...
The weather turned very cold when November came, followed closely was Cassia's allergies.
The mountains around the school became icy grey and the lake looked like chilled steel. Every morning the grounds was covered in frost and sometimes Cassia spotted Hagrid defrosting broomsticks out on the Quidditch pitch, through the windows. Hagrid was always bundled up in a overcoat, gloves, and enormous boots.
One good things, despite the allergies and cold weather, the Quidditch session has started. No one had ever seen Harry and Cassia play, because their captains wanted it to be kept secret. However, somehow, word spread anyway.
Cassia wasn't sure what was worse; people saying that she'll be brilliant or people saying that they'll hold a mattress under her because the Bludgers were going to knock her off her broomstick. Someone had said that it was a shame because the Bludgers were going to mess up her 'pretty' face.
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On the day of the Quidditch match, Cassia, Sally-Anne, and Lily were about ready to walk in the Great Hall, Harry had pulled her aside.
"Harry!" Cassia said cheerfully. "I was going to wish you luck."
"Never mind that," Harry said. "Listen I went down to Snape's dungeon to get Quidditch Through the Ages—"
"That's a good read," Cassia interrupted. "I still can't believe that there's seven hundred ways to commit a foul and they all took place during that World Cup match in the 1700s."
"I know," Harry said.
"I think there's a World Cup match coming up," Cassia said. "I think we'll be in our fourth year by then. Maybe we might be able to find a way to be able to see it."
Harry nodded, "If the Dursleys would let us." He realized how off topic they had gotten, "Never mind that. I just saw something horrible."
"Worse than seeing Dudley naked?" Cassia asked. They both shuddered.
"No, worse," Harry said. "I went down to get Quidditch Through the Ages and I saw Snape and Filch down there."
"Doing what exactly?" asked Cassia.
"Well, Filch was patching up Snape's leg," replied Harry. "It was bloody and mangled. Hermione, Ron, and I think that he was trying to get past the three-headed dog."
"How do you know?" asked Cassia.
"He asked how you were supposed to keep an eye on all three heads at once," said Harry.
"So, that explains why he's been limping," said Cassia thoughtfully. "Lily thought it was because of some weird potion-mishap and Sally-Anne was going for some weird stairs incident." Harry chuckled and shook his head. "You better get in there and eat."
"I'm not hungry," replied Harry.
"You need strength. You don't want to faint off your broomstick because you haven't eaten," Cassia said. "That would probably kill you."
