Dear Mr. Lupin,

While I have not known you for very long, I have a hunch I can trust you. My hunches are not typically wrong. I will be frank. I need someone who'd be willing to fight for me. I know you fought alongside my father during the first wizarding war, and I was hoping you would help me with this relatively smaller matter.

There is a madman after me; a man that is not Voldemort. He is a muggle of the highest intellectual and economic power. He wants my guardians dead as well myself. He has made his move, and now it is my turn to retaliate. Before I go into more detail, may we meet somewhere to discuss this further?

With regards,

Harry Potter

After sending Hedwig off with the short letter to Remus Lupin, Harry placed his quill on the desk and rubbed his temples. It'd been a few days since Sherlock and John went on the run, and they hadn't been in contact.

Harry had stayed in the Leaky Cauldron, making it his base of operations, so to speak. It wasn't much, but it worked. He'd even managed to get a bulletin board moved into his semi-permanent room with the help of Tom. He tried to avoid the awkward stares the wizards at the pub gave him.

Through thorough investigation and more than one sleepless night that week, Harry realized just how much Sherlock's description of the man was truth and not exaggeration. Sherlock was, after all, a bit overdramatic sometimes. His reach was all over. Nearly every major case since John met Sherlock was the work of James Moriarty; the cab driver, the jade pin, and Irene Adler. Hell, Harry wouldn't have been surprised if the man were somehow involved with the Hound of Baskerville case.

In short, if Harry wanted to take down the man, he'd have to cripple the organization. There was no other way about it. Moriarty was a hydra. His head was the most important, but his empire would survive without him. Harry knew Sherlock must have done extensive research and God knows Mycroft will have some information. Perhaps it was time to visit his uncle. He knew where to find him.

Harry entered the Diogenes Club with a pen and a notepad. He approached the man at the desk and began scribbling.

Is Mycroft Holmes in the Stranger's Room?

The man's eyes swept over the pad and then nodded. With a gesture that clearly meant for Harry to follow him, the man began walking deeper inside the club. The man led Harry to a grand wooden door with a plaque next to it entitled Stranger's Room. Harry managed to sign the words Thank you to the man before opening the door. The hinges didn't even creak.

"Ah Harry. I wondered when you would find your way here," Mycroft said, smiling coldly. Closing the door behind him, Harry stared at his adoptive uncle for a moment.

"You knew I'd come?"

"Of course. With Moriarty on the loose, and my dear brother and Doctor Watson on the run, you would naturally find your way here eventually. Took you longer than I thought, though. I must ask, where have you been these past few days?" he asked. On the desk was two plates, one for him and another for a visitor. Harry assumed it was an invitation to sit, and he did so.

"I can't tell you that, uncle," Harry said formally. He'd never really spoken to the man before. It was like talking to Sherlock, but without any warmth whatsoever. Harry thought that perhaps the chill in the room was not coming from the air-conditioning, but from the man in front of him.

Mycroft looked at him critically for a few moments. He didn't blink or even twitch. It must be a family thing, because Sherlock often did the same thing. Harry didn't back down, though. His emerald eyes matched the man's intense blue ones.

"I take it you're a wizard then?" he said calmly.

"What?" he said immediately. He knew the man could deduce things but something like that just didn't occur to muggles. Unless…

"You're a wizard?" Harry asked. Mycroft snorted.

"If I were a wizard I would not waste my time with being a government official. No, I am not magical. However, high-ranking members on a need to know basis do occasionally interact with the magical government. Naturally, I need to know," Mycroft replied. Harry looked surprised.

"I thought the magical government was totally secluded from the muggle one," he said.

"Oh they certainly tried, but after the attacks on Britain during the World Wars, the magical community couldn't try to hide. Bombing raids took out magical people as easily as they did muggle. They reached for our help and we granted it. They are still British citizens, after all," Mycroft said smiling.

"So you know about wizards, but you never talked to us about it?"

"It was highly classified information that only a handful in the government knew about. Of course I never told you three!"

"I suppose that makes sense. So, you know I'm a wizard. Now that that's out of the way, let's talk about Moriarty," Harry said. Mycroft's left eyebrow rose ever so slightly.

"You have a plan to deal with this criminal mastermind?" Mycroft asked.

"Part of plan that you most certainly could help with. As of right now I'm trying to enlist as many people as I know to help me. There is a friend of my biological parents that I believe could lend magical expertise and aid. I also heard a rumor that before Sherlock went on the run, he was assisting Dumbledore with another criminal mastermind, this one of magical nature. I thought he could also lend some help," Harry replied. Mycroft nodded.

"It seems you have a handle on the situation, if a very light and barely controlled handle. To answer your question, yes I will help you. I fear for my brother's safety, and that extends to you and Doctor Watson. Moriarty is psychotic and will stop at nothing to destroy everything his one true enemy, my brother, represents," Mycroft explained.

"We probably should not meet in the Diogenes Club every time we wish to speak. Moriarty is bound to catch on. Might I suggest somewhere in the magical world? Somewhere totally secure?"

"And where would that be?"

"Hogwarts."

Harry led Mycroft through London, back to the Leaky Cauldron. Mycroft, like Sherlock and John, did not notice the building until he was standing right in front of it. He blinked and then looked at the building. The man actually looked shocked.

"I am always astounded by the power that these magical people could hold over us," Mycroft said. Harry laughed.

"They would first have to move on from medieval times," Harry responded. Mycroft understood what Harry meant as soon as he stepped through the doors into the pub. Most of the people were wearing robes of some kind and even pointy hats.

"How stereotypical," he said, chuckling.

"No kidding. They actually ride brooms, you know," Harry said.

"And magic carpets, too?" Mycroft asked jokingly.

"No, those were outlawed awhile ago, apparently," Harry replied nonchalantly. In reality, he was getting a bit of a kick out of Mycroft's constant dumbfounded expression. It certainly did not suite the man.

"Come on, we need to floo Dumbledore," Harry said.

"Ah, I've heard tell of the man, but not much. He is your headmaster, yes?"

"Indeed. He's also quite eccentric, even for your brother. Be ready," Harry said.

"Thank you for the warning," Mycroft said, staring at the fireplace they approached.

A brief trip through the floo later, and they were face to face with Albus Dumbledore and Fawkes the phoenix.

"Ah Harry, good to see you, lad. And you must be Mr. Holmes the older, yes?" Dumbledore said after they stepped through the fire. Harry extended his hand.

"Headmaster Dumbledore, it is good to see you again," Harry said. Dumbledore shook the boys hand and Mycroft followed suite.

"So Harry, tell me why you venture all the way to Hogwarts of all places during your Summer holiday."

"There is a madman after me, professor. Not just Voldemort. This one's a muggle. Mycroft?" Harry said, glancing at his uncle.

"Erm, yes. Mr. James Moriarty is a criminal mastermind that not only a week ago broke in to three of the most secure places in England. Not only did he not take anything, but he also got off scot-free," Mycroft explained.

"Fascinating. And you believe this muggle is making an attempt against Harry?"

"I do not believe… I know. He will stop at nothing to destroy Sherlock, John and Harry. He could be compared fairly well to Voldemort, except Moriarty rules only the muggle underworld. I don't think he'd try to make a bid for Prime Minister," Mycroft said. Dumbledore's eyes lost their twinkle.

"I see. Yes, this man could pose quite a threat. If he is nearly as bad as you say, then he must be stopped," Dumbledore replied. Mycroft raised his eyebrows, but said nothing.

"Do you have a plan, Professor?" Harry asked.

"I consider myself a fairly powerful wizard, but no. Not yet. To be fair to myself, I've only learned of the situation less than an hour ago," Dumbledore chuckled, "Where do you believe we should go from here, Mr Holmes?"

"Well, first we must contact my brother. He has been planning for this for awhile and would not be very happy if he found out we were plotting against Moriarty without him," Mycroft said. Harry nodded in agreement.

"He's on the run from the authorities, though. Would there be a safe way to contact him?" Harry asked. Dumbledore smiled.

"I believe I can help with that. I can, as you muggles say, teleport," Dumbledore said.

"How does that help us?" Mycroft said. Dumbledore looked at the man for a moment before nodding.

"Take my arm and you will see."

Harry took one arm while Mycroft took the other. A quiet pop echoed and suddenly Harry felt himself being stretched and squeezed as if being sucked through a giant straw. He vaguely heard Mycroft yelp before all three were deposited in front of St. Bart's Morgue.

"How did you know Sherlock would be here?" Mycroft asked.

"Legilimency. It is a form of mind reading. I only brushed your surface thoughts and saw that was where you and your brother established where to go if hunted by the authorities. My my, you two have prepared for this, haven't you?" Dumbledore answered calmly.

"It is a wonder a wizard hasn't tried to take over the world," Mycroft remarked. Dumbledore chuckled.

"Over my dead body, and that is highly unlikely."

The trio walked up to the steps and looked throughout the hospital. On one of the top levels , they found the two talking heatedly. As soon as they saw Harry, the talking stopped. Harry ran and embraced Sherlock and then John. Dumbledore and Mycroft followed up and began talking with Sherlock.

"Are you alright, Harry? You didn't let Lestrade get to you, did you? He's a good man but right now we're being set up by Moriarty and he's playing him against us," John said, getting low so he could look him in his eyes.

"Yeah I understand. I've been hiding at the Leaky Cauldron while trying to make plans to stop Moriarty," Harry replied

John was obviously concerned. The man appeared to be scanning him for any physical injury whatsoever. Harry knew he was fine but was glad that John cared so much. It warmed his heart. After a few more moments, John seemed satisfied.

"Alright. Let's see what the grown ups are talking about."

"Good time to join us, gentlemen. I believe now that our little group has come together, we can discuss how to properly defeat Moriarty," Albus said, eyes twinkling.

"Time to get rid of the spider once and for all," Sherlock said, smiling coldly.