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"No, and no, he was not under Moriarty's shadow, as you so eloquently put it."

"But you're not going to tell me what he was."

"He worked for the Auror office. No, you've never heard of it," Mycroft said, looking between John and Sherlock who both looked confused. "And I cannot tell you about it."

"Why not?" Sherlock demanded.

"Sadly, it's one of those law things."

"Which you are generally above," Sherlock said.

"Yes, but not in this case. This is too important, and you're too loose lipped," Mycroft said.

"I know how to keep a secret."

"Only if you want to. This is one that must be kept. I'm sorry, but I cannot tell you any more than that. If you insist on investigating further then I will be forced to take measures of my own," Mycroft said very calmly.

Sherlock looked annoyed, very annoyed, but he simply rose. "Come on, John," he said, walking out. He made no sound until they were outside hailing a cab.

"You gave up easy," John said.

"Hm? What? No, he wouldn't tell me anything else anyway, but I got enough."

"Like what?" John asked, knowing better than to ask 'how' as Sherlock would just brow beat him for not paying attention.

"High security, higher than embarrassing pictures of royalty. Higher than missile plans, higher than the Coventry problem. This is more important and a better kept secret than Royalty, terrorists, or military. This is something that if I find out and I tell people it will topple people's perception not just of the government but of everyday life. This is a big secret, one that a normal person wouldn't believe so it can hide in plain sight, which is why even I haven't noticed it before… but now that I'm looking," he said, trailing off a bit.

"So… what do you think it is?" John asked.

"I have no idea," Sherlock said.

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