Thanks Gogglehead Lover, for the reviews!

I have this fan fiction also at The Harry Potter Realm, and there was one reader who actually figured out the puzzle! She asked me, and she was right! Wow! Now if any of you people think you know the answer, email me, and I'll see if your right or not. If you are, I'll give you something special (like you can request an avatar/banner for your own).

Hermione stared at the writing. "Something strange is going on," she said. "We have to find out who's doing this, and how to stop this."

Ron squeaked. "Us?"

Hermione nodded grimly.

Harry couldn't pay attention in Potions the next day. No one else could - how could they concentrate knowing that some insane attacker could suddenly burst into the room, and...

BANG

"OUCH!"

"MR. POTTER!"

"Oh, crap," Harry muttered under his breath. He dropped the hammer he accidentally hit his hand with, and looked sheepishly up at Snape's large hooked nose, that was dangling in front of him.

"Do you think it's funny to disrupt my class?"

"No."

"No, sir."

"No, sir."

Snape glared at Harry. "Ten points from Gryffindor."

"That totally wasn't fair!" Ron exploded the moment they left the Potions room. "Why didn't you say anything, Harry?"

"Ron, there's nothing we could do," said Hermione, "Snape's a teacher - he could have easily just taken more points away from Gryffindor for talking back to a professor."

"Anyway, it doesn't matter," Harry said, shrugging. "It's only ten points...We have bigger problems to solve."

"Like what?" said Ron, glaring back at the closed door of the Potions dungeon.

"Like trying to solve out who's doing all of these pranks," said Harry, and Hermione shook her head.

"I keep saying, Harry, these aren't pranks! Something weird is going on." Hermione shivered as they walked into the Gryffindor Common Room.

"How's the DNA potion going, Hermione?" Ginny asked, hurrying up to them. She was snacking on a chocolate frog.

"Fine," said Hermione, settling in a squashy armchair, and pulling out her homework. "I have all of the ingredients, and I started a couple weeks ago. So, I should have the answer in about two more weeks."

Ron did a sort of jig, recieving many weird stares. "I can't stand it! I gotta know!"

"We all do," said Hermione, scribbling down a few paragraphs on the Transfiguration essay they were assigned the day before, "Just be patient, Ron. We'll know in a couple of --"

Before Hermione could finish her sentence, a loud, ear-piercing shriek came from the halls outside of the Gryffindor Common Room.