"Sherlock!" The Doctor called, sitting next to his friend on the sofa in the Ravenclaw common room, who was finishing off his Potions homework and closing his textbook. "Where have you been? We were looking for you, apparently there was a murder in the village a little ways away."

Immediately Sherlock sat up at the word 'murder' and he turned his head towards his friend, the last of the Ravenclaw students were walking into the common room and the painting closed with a thus before Sherlock said "Hogsmeade? Who would murder someone there? It's just farmers and occasionally a few teachers but nothing more."

"No clue," the Doctor said as he shook his head, the fire crackled loudly but he still continued on "but I heard Morgan talking to McGonagall, he said that a few villagers went missing too. All children who were at the age of eleven."

"Missing you say?" Sherlock said, he put his hand to his face in a 'prayer position' as he thought through everything. "People being murdered and then children going missing, that's happen to ten other towns. All kids that ended up missing were the same age as the number of their village attacked."

The Time Lord blinked, uncertainty growing his dark green eyes as he said "So it's been staged?"

"Of course," Sherlock said, his eyes glowing in the firelight. He glanced over to the door where River Song was studying potions with a fellow first year. He continued "every village was getting closer to Hogwarts and now the next hit will be Hogwarts."

"Twelve," The Doctor said as he made a realization "what ever the creature is, it'll go for children at the age of twelve next. Sherlock how old are you?"

The young detective looked up, eyes wide as his hands dropped to his lap. He said "Twelve...but look at the other houses. They've plenty of twelve year old children there so they could be hit first."

"Yes but whatever is taking the children would naturally go for the ones who are close to the answer." The Doctor said "But we need to solve it before they get here. The murders and the kidnappings happened within a week of each other. So we have a week until someone dies and people are taken."

Sherlock nodded, silver-blue eyes twinkling as his thoughts came up with four different solutions but they need more evidence to truly find an answer "So a week, naturally the teachers won't believe us so we have to do our own investigation."

"Where do we start?" The Doctor asked with a sigh "We can't go to the village yet it's too early. The third years aren't even going yet. So checking the village is out."

The Detective nodded and said "Besides, they'll put the autopsy off until they find a trail to look for the children. So we have a little time but knowing the teachers, they'll have this place on lockdown until further notice...and asking them would get us in trouble. Unless we ask..."

The Doctor picked up where Sherlock left off "Mycroft. He always pops round for a monthly chat with the teachers so he should be here soon. We could ask him."

Sherlock nodded and raised his eyebrows, playing with the idea in his head before saying "I guess that would work but the only way we could see which house is attacked first is to get the others on board."

"Amy could keep an eye on the Gryffindor girl's dorms while John and Rory could watch the boys." The Doctor said, listing off the people one on his fingers. "We have Ravenclaw, we could easily get River on it. Hufflepuff, Molly and Lestrade but that leaves Slytherin. No one likes you there and Moriarty won't help. So we need to make friends there."

They jumped when River jumped over the couch and landed between them, robes flying out behind her as she said "No friends in Slytherin to help you with your little investigation eh? I could help you with that, I've plenty of friends to help."

"Who?" The Doctor asked as he raised an eyebrow at the girl.

River shrugged "Irene Adler would be an interesting addition to our little friend group. She's a slytherin and no doubt has a few guy friends there that will help you. Also Sebastion, you know the one whose dad owns a huge bank in London? The one that got broken into awhile back? That's him, he could help us."

"Why?" Sherlock asked "What would you even say? 'Oh we need you to spy on your house for us because there's a murderer taking kids'? People would just call you weird."

The girl shrugged a smirk growing on her face as she said "Well, blackmail can help with Sebastian. I've known him a long time, my foster parents were friends with his dad. Irene will help without a doubt, she's interested in adventure."

"So that could work but there's one problem though," The Doctor drawled out as he continued before anyone could ask 'what?' "what if we do get caught? There has to be a cover story for it. Besides, if Mycroft found out what I was doing...it wouldn't end well for me."

River blinked but Sherlock turned to face his friend and asked "What? Why wouldn't it end well for you? It's just Mycroft."

The Time Lord glanced from side to side nervously as he said, a worried tone entering his voice, it was alien to the Doctor and from what Sherlock could tell he knew that the Doctor wasn't telling them something "No, you don't understand. I know your brother made me a deal to keep me in check. If I break it he and the ministry..."

The Doctor trailed off but River this time was the one who spoke "He'll what? What would happen?"

"He breaks the charm." The Doctor whispered, eyes at the floor. He fished around in his pocket and pulled out a pair of blue glasses, the same color as his case. He handed them to Sherlock, "look through them and tell me what you see."

Sherlock grabbed the glasses and slipped them on his face, when he looked through them at everyone else in the common room they looked normal but when he turned back to River and the Doctor, his heart nearly stopped in surprise. The two who were sitting next to him looked fully grown, the Doctor looked about thirty while River looked middle forties. He blinked in surprise while River raised an eyebrow as a question but the Doctor's eyes were only downcast.

"You're seeing us for how we really are," he said slowly, trying to break it to Sherlock slowly so the boy didn't freak. All Sherlock was seeing was the Doctor wearing a tweed jacket with black pants and a dark blue bow tie to continue the look. "The charm transferred people at this school back to adolescence to keep them safe."

"From what exactly?" Sherlock asked, confusion lacing every tone in his voice "What do you have to hide from?"

The Doctor sighed as he ran a hand through his hair and continued "We entered the parallel dimension, which is this one, and it started to kill us being we were not from here. Mycroft, who was working for the ministry at the time, used a aging charm that turned us to children where we grew up. Now we're here, being Time Lord I didn't forget while the others did. So Sherlock, if you want to know who else traveled with me look at yourself."

The Detective raised an eyebrow as he glanced down at himself, his eyes widened in shock when he saw himself. He was full grown wearing a dark purple shirt with dress pants and black shoes to complete the look. He glanced at the Doctor in complete surprise. He shook his head, eyes wide as he said "That makes no sense, how could I travel with you? We just met not even a week ago!"

"It's a lot to take in, I know." The Time Lord said as he placed a hand on his friend's shoulder, Sherlock handed him the glasses while The Doctor took them and slipped them back into his robe. "Sherlock, you have to trust me and tell no one else. Please, it's important that you disregard this conversation and what you've seen tonight...because it just might save your life."

Sherlock nodded, eyes wide with confusion and shock as he took in all the information before he said "How old are you then?"

"One thousand and two hundred years old." The Doctor said with a sigh as he looked to River Song who had her eyebrows raised, sadly she wasn't one of the people who remembered. "A long life with eleven faces."

He shook his head, ignoring the last part about eleven faces. Sherlock nodded "Well then, since we've traveled before I must say that we have to be friends. So Doctor, when will this charm break exactly if it truly real?"

"When we've reached the end of our schooling years," The Doctor sighed "the charm breaks and they come back to get us."

Sherlock raised an eyebrow as he said "They? Who are 'they' exactly?"

"I won't say," The Doctor said darkly, Sherlock flinched at the tone but the Time Lord continued "but all I can say is that we're going to need all the magic we can before our schooling years are up."

The Detective sighed with a shake of his head as he stood, gathering his books up with him as he turned to face his friend one last time "We need to first finish this year, besides Doctor, we have a week to find something before children start to go missing. We might not even have a week and we don't want any unwanted attention flicking in on our investigation."

He swept away leaving River and the Doctor sitting alone, River's gaze was following Sherlock as he walked away while the Doctor traveled through his own thought process. He wondered if it had been a good idea whether to tell his friend he truth or whether it had been a mistake.

Days had passed quickly, faster than anyone in on the 'investigation' had wanted. It was six days later, from their honest discussion and the Doctor and Sherlock sat in the stands with the Ravenclaw students as the Quidditch match began, Hufflepuff vs Slytherin, a natural event for the first of year. Slytherin was up by forty points while Hufflepuff remained solely at ten. Sherlock was watching in a bored interest as the students from both houses flew around, defending and offending, while the Doctor was watching with bubbling excitement.

"Don't you think it would be cool to play Quidditch?" The Doctor asked, eyes following the Seekers as they tried to find the snitch "I think it would be."

Sherlock shrugged as his eyes followed something gold, not the players. "Yeah, but how come those idiots can't see the snitch? It's right there! Are they blind or something?"

The Doctor squinted his gaze, looking where Sherlock had his gaze pinned but he saw no flash of gold. "How can you see that from this far away? You need to try out for Seeker or something. Those eyes of yours could win us the Quidditch cup."

"I don't know, Quidditch always seemed fun but it was always boring when I played it." Sherlock said with another shrug, his eyes following the snitch, the Hufflepuff Seeker was chasing it. "But I guess could, but Doctor, it's been almost a week. No one's been murdered yet."

"Yet," the Time Lord said as he turned towards his friend, Sherlock glanced at the Doctor "we have until tomorrow. Who knows?"

Sherlock looked up once more, Carl Powers, the Seeker from Hufflepuff looked like he was having issues, being he was grabbing his throat. Carl was too pale for comfort and then Sherlock heard a girl's scream as the Seeker fell from his broom. Sherlock leaned over the edge, eyes wide in horror as he pulled out his wand. He was the first and when people's spells missed, Sherlock's hit it's mark.

"Wingardium Leviosa!" he shouted, panic holding onto his heart as the limp form the of Seeker was caught by his charm.

The Detective slowly lowered Carl until the Seeker was on the grass, the crowd let Sherlock and the Doctor through being he was the one keeping Carl from falling to his death. Madame Pomfrey was checking for a pulse and her eyes widened when she found none. The children kept their distance while the Quidditch players stopped the game and were just floating over head, waiting for news. The nurse shook her head as her eyes traveled to the limp form on the field.

Cries of anguish filled the air as word spread that Carl was dead. Sherlock looked away where his eyes traveled to where Moriarty and blonde boy was standing, his eyes narrowed coldly when he them smirking. Before anyone could tell his leave, he stormed over to Moriarty. The Slytherins looked up as the detective walked over to them.

"Is this your work?" Sherlock growled as he narrowed his eyes and crossed his arms over his chest.

Moriarty drawled out, a smirk on his face while his amber eyes shone with murderous glee as he said "He talked about me...so I stopped him talking."

"Is this is what's going to happen to my friends?" Sherlock growled out "You kill them for no reason at all?"

"No," the Slytherin said, a smirk on his face as he said "it'll get more interesting as the years progress. Oh yes, have you met my friend the Master? Apparently he knew the Doctor."

The Master smirked and gave a mock bow, ignoring the wails and sobbing of the people as they carried off Carl's unmoving form. The boy said "So you know my enemy? How fun, Jim and I could cause some hell. I can say this is going to be fun."

The Detective said his next sentence slowly, his tone cold and venomous as he spat out "You leave my friends alone, you hear me? I would hate for there to be an accident concerning the deaths of you two."

Moriarty laughed coldly as his eyes glinted "Don't hurt your friends...so you're off limits then?"

Sherlock growled "I honestly care what you do to me. Just leave the rest out of this mess. Are we clear?"

"No," Moriarty grinned "I don't think we are. Our game hasn't even begun yet and when it does...shall we say it'll be interesting."

With that the two Slytherins were gone, walking side by side back to the castle as sobs racked the air. Sherlock blinked and turned, unable to get the glazed look of death out of his eyes. He stood tall and clear against the autumn wind, he had to prove Carl's death was murder. No matter what, even if it took him a few years.