Author's note: Followers! And Reviews! And Favourites! After three chapters! I'm glad you like it – seems like I'm not the only one who was fun.

This chapter is going to be shorter. Sorry.

I don't own anything, please review.

Sherlock had know that John would expect him to have an answer how to approach Mycroft; how to prove or disprove that he was possessed.

But, for once in his life, he didn't know what to do. He had fought against the most dangerous criminal this city had ever seen; he had dismantled his web; but this – this probable possession – England in the hands of a demon – and the fact that he could do very little, simply because he and Mycroft had never got on –

No. There had to be a way. There always was a way. He refused to believe it was impossible. If something was wrong with Mycroft – if he was indeed possessed – he had to help him. Despite Moriarty. Despite everything.

Plus, England would fall if someone else than Mycroft Holmes ran it. He owed it to his country to set things right. Not that he cared.

Sherlock looked up to find Castiel staring at him again. Somehow, he had the strange feeling that this man he knew nothing was able to read his thoughts; it was disconcerting. He shook the feeling off and looked at the brothers.

"While I won't be able to pretend to meet Mycroft just to "catch up", I think it might be possible to have put holy water into his drink. Even to have him come here to watch the reaction".

"And how?" Dean demanded after he had finally finished the cake. "I thought you two didn't see eye to eye".

"We don't. But he is sure to give me a case within the next few days – in fact, he's three days overdue – and he will have to come by to give me the file. He doesn't like to send important information per phone or e-mail".

"Of course he doesn't" Dean replied, clearly sceptical. Sherlock shrugged his shoulders.

"If you don't believe me, you are free to leave."

Sam quickly intervened.

"It's not that we don't believe you, Sherlock – it's just, if your brother is really as powerful as you told us, the demon inside could wreak havoc in a few days, that's all".

"Yeah, that's what I meant" his brother confirmed.

Sherlock raised an eyebrow. Somehow, these two reminded him of him and John, although he still couldn't deduce Castiel, much to his frustration. Or at least Sam was always trying to turn Dean's statements into something more socially acceptable. Sherlcok would gladly have told him that it wasn't necessary, but had the feeling that John wouldn't like it.

"So we wait" Castiel said. It wasn't a question, and he didn't sound annoyed or impatient either.

Sherlock nodded. "It's the only thing we can do". He could try to break into Mycroft's mansion; he could try to get into his office. He could try to throw holy water at him, or whatever these three thought would work. But he wasn't convinced that Mycroft was possessed – how could he be – and he wouldn't risk the relationship they'd built slowly ever since he'd come back. Not yet. He was worried, he would admit that. But just because Mycroft didn't act like himself –

Only there was no "just" about it. He had known Mycroft all his life, and the elder Holmes had never acted strange. He was a creature of habit; went to work and the Diogenes Club at the same time every day (unless an emergency made his presence at the office necessary). He rarely left his accustomed paths and therefore, although undeniably dangerous to anyone else, he was somewhat predictable for people who knew him. As far as Sherlock was aware, this list included him, Anthea, possibly Greg – and would have included John if the doctor hadn't been blinded by his resentments. Sherlock understood John's reasoning, though. Now and then, he couldn't help but wish to feel the same way. It would make everything easier.

He had to concentrate on the problem at hand though, on the three... hunters sitting (or standing, Castiel still hadn't sat down) in his and John's living room telling him that the British Government was possessed by a demon.

God knew what it could do, or had already done. He would have to check with Anthea to make sure they weren't on the way to a war.

Speaking off –

His text alert rang out. He read the text and sighed.

"You'll have to go" he informed them, curtly. "Anthea thinks Mycroft is going to realize something's amiss any minute now".

"I'd have expected he'd find out sooner" John said, "He must be getting slow."

Sherlock couldn't help but smirk. Sam and Dean didn't react to their little exchange, but Castiel shot them a puzzled look. Then again, this was what he'd done since he'd entered the flat.

Sam nodded and stood. "We'll find a hotel". Dean sighed, looking if he'd really eaten the last piece of cake (he had) before standing up and walking to the door, Castiel following him immediately.

They exchanged numbers – Sherlock naturally giving them the one of his untraceable burn phone.

"I will call you as soon as I've spoken to Anthea. I am sure we will find a way to explain your presence."

"Alright" Sam said and left with a polite "Goodbye", followed by Dean who waved a hand in the air and simply called out "See you later".

Castiel turned around before leaving and said, quietly, "We will do some research too. We will do our best, and we will try to save your brother".

He nodded at Sherlock and closed the door behind him.

John looked at Sherlock and shook his head.

"I'd say he was a little bit strange –"

"If you didn't know me" Sherlock completed the sentence absent-mindedly while texting Anthea that it was safe to turn the cameras back on and that he would be in touch through a burn phone.

"She's got one too, of course" he explained to John. "For emergencies".

"Doesn't Mycroft have the number?"

"Yes, but as long as he doesn't know we are in touch he will hardly think about controlling all his employee's phones. It's a risk we have to take".

John went into the kitchen to make more tea and hid a smile. Complicated as the situation was, dangerous as it was, he couldn't help but find Sherlock's worry... endearing, for lack of a better word. Even if it concerned Mycroft.

A few minutes later, he came back with the tea and asked, "What did you deduce about them, while we're at it?"

Sherlock sighed. "They are hunters of some sort – and brothers, I am sure of that. But..." he trailed off and John asked, "Yes?"

"Castiel. I can't deduce anything about him."

"Nothing?" the doctor asked, surprised. "Just like..."

"Yes. Just like Irene Adler. Somehow I doubt he's a dominatrix who regularly blackmails her clients".

John snorted and gave Sherlock his cup.

"Do you trust them?"

"I don't have enough data yet."

John should have known this would be the answer. Then again, he didn't yet know if he trusted them himself. What they were saying was ridiculous – but he'd seen his fair share of strange cases since he'd met Sherlock. They genuinely wanted to help them, though, and John was convinced it wasn't all about the money.

Castiel was weird, he would admit that, but he didn't seem dangerous.

Sherlock got a text on his burn phone. He read it, downed the rest of his tea and stood up.

"I'm going to meet Anthea."

Before he could ask, John had already put his jacket on, and Sherlock smiled.

They took a cab to the warehouse John had first met Mycroft in.

Anthea was waiting for them in the shadows and said as a way of greeting, "He's in a meeting. We have half an hour".

Sherlock nodded.

"So you have met the Winchesters?" Anthea asked.

"Yes – and their friend."

"I can't tell you anything about him, I fear, but they swear he is trustworthy, and they are good at what they do."

"So they are really some kind of – ghost busters?" John asked. Anthea nodded.

"Yes – and they are the best".

"There are more of them?"

"Yes there are. But that is not what I have to discuss with you". She took a deep breath. "Whether or not your brother is possessed, Sherlock, I know what he is planning to do".

"And?" Sherlock asked. Anthea seemed – almost scared. He had never even seen her nervous. Something was wrong.

She hesitated before answering. "He has been looking closely – even more closely than normally – at the lives of the leading politicians in the country. He made sure his orders would be followed by certain military leaders no matter what. I think – I think he is going to murder the members of the Government, close off the boundaries and cut off all relations to other countries. People will be prisoners in their own country. He would control everything – and I mean the lives of everyone, not just the Government as he does now.

He is about to become a dictator".

Author's note: I don't know how long this is going to be.

At least we found out what Mycroft's plan is – perhaps. I know I am evil. Oh, yes, sorry about the cliffhanger. Totally. I didn't mean to write it. At all. You don't believe me, do you.

I hope you liked it, please review.