Chapter 1

"Harry, you know we're not getting anywhere with this, and Sherlock Holmes and John Watson are the best. I say we see them," Hermione reasoned.

"Dumbledore told me not to tell anyone…" Harry looked at the ground.

"Well, he sure didn't tell you a whole lot else, did he?" Ron grumbled.

"We need help, Harry. We need something," Hermione said softly.

"I know," Harry admitted. "But, how are we supposed to explain this to him? It's too complicated… and he's Muggle and…"

"What choice do we have?" Harry sighed.

"Good morning, Mr. Holmes, Mr. Watson." Hermione greeted from the door of 221B Baker Street.

"Come on in," John said, and he stepped out of the way. "Have a seat," he said, pointing to a chair in the middle of the floor. "Tea?"

"No thank you," Hermione said, shaking her head.

"So, why are you here?" Sherlock asked. "Probably not a love problem, you're all too young to be married… although that would be interesting, a love triangle, oh, never had one of those. The girl clearly likes the redhead, and the feeling is mutual but then the one with the glasses wouldn't be here," Ron and Hermione tried their best not to look at each other. "Not a family issue, you're all obviously not related. Could be a crime that happened somewhere, but you're too smart to get into something like that, aren't you? No, there's something different about you..." Sherlock said, sitting in his chair. He was squinting his eyes and staring at the Trio respectively.

"We… have a problem, sir…" the Trio exchanged glances. "It's… a bit complicated…"

"I doubt it," Hermione paused.

"Okay… maybe I'll just show you," Hermione hesitantly pulled out her wand. Sherlock tilted his head.

"Wingardium Leviosa," Hermione said to the cup of tea John was holding. It, of course, floated into the air.

"How-?" John started.

"Magic," Sherlock seemed overjoyed. "Do something else,"

"Avis" Birds of shades of grays, greens and blues shot out of Hermione's wand.

John looked positively baffled, while Sherlock was having a field day.

"This is spectacular; I always knew it existed,"

"Wait a minute, wait a minute. How do you know this isn't a trick?" John asked Sherlock.

"These three teenagers go a school called Hogwarts," he said looking at the book 'Hogwarts, a History,' poking out of Hermione's bag. "Fairly ridiculous name, named after the flower, I wonder why that is? Anyways, these two," he pointed to Harry and Hermione, "were raised by people like us; mortals. The one in the middle was raised by that of his own kind. They are smart enough to pull off a trick like this but they are serious and wise enough not to. They need something," Sherlock finished.

"Yes, we do; and… soon. You see, in our world there's an evil… army, of sorts. Long story short, the leader of this… group has created a thing called a horcrux. They… when you create one, your soul… gets torn. You place part of your soul in an object; anything you want. It makes you immortal, until the object is destroyed," "So you need me to help you find this object,"

"Yes. Sort of. He… there's seven of them," Hermione waited for his reaction.

"Aaah, I see…" Sherlock looked deep in thought.

"So, can you help us, ?" Hermione asked after a moment.

"Have you found any?" Sherlock crossed his arms.

"One,"

"I assume it's dangerous?" he said with a hint of a smirk.

"...a little." Ron replied.

Sherlock nodded and turned to look at Harry for the first time. 'horcrux, Voldemort, snake, killing curse, scar' were just a few of the words he saw. He tilted his head. "How many did you say you had found?"

"Just one, sir."

"Well, it is obvious you need my help. You actually have two," The trio frowned,

"No, no we haven't." Sherlock looked Harry in the eyes,

"Yes, you have."

A/N: Hey everyone! So for a school project we could do a writing thing and so I'm doing this for the next like six or so weeks. This is my first crossover and it's soooo exciting okay so... hope you liked it!