Disclaimers & Author Note:

ALL the AU. I do not own Leverage or Sherlock.
I hope I have the characterization right because that's something I always worry about.

Prologue: Sherlock, we have a problem

Ring, ring

"Oh not now..."

Mycroft Holmes had a busy day, and knowing from the ringtone this was business. He checked his cell phone, almost expecting it to be Sherlock just to annoy him, but he hadn't seen the number before. It was American, according to the +1 in front of the number. Before the idea of just ignoring the call crossed his mind, he picked up.

"Hello, this is Mycroft Holmes."

"Yes mister Holmes, my name is Ronald Campbell, I'm from the orphanage of Chicago. I called you because we need your help." The man on the telephone sounded stressed. Not your average stressed, he had run out of ideas, maybe options, in America, and now needed help from England. But why an orphanage?

"We have a young girl at our care, but because she has been having problems with other people, we tried having tests done. However, none of the doctors, psychologists and psychiatrists we tried were able to finish the tests! The most renowned psychologists of America currently have a burn out, one even started crying during the test. This girl is... different. We think it's trauma but can't be sure. Most people think she's insane but she's so young... Do you think you have anyone in your country that would be able to help?"

That was one story. A young girl, getting all kinds of psychologists in a burn out? Actually quite interesting. However, if nobody in America could handle her, why would anyone in England be able to do so?

"I'm very sorry, mister Campbell," He said as honestly as he could. "But I'm afraid there's nobody that crosses my mind at the moment."

Bleep, Bleep.

While the American was practically begging for him to find someone, Mycroft didn't bother to listen as he quickly checked his 'private' cell phone for the new message.

Bored!

-SH

Sherlock again. He won't ever stop bothering him... His little brother really needed something to...

"Hold on, mister Campbell. I might have an idea, but it's a shot in the dark and I'm not even sure if the man I'm suggesting will do it. He's... quite the remarkable man himself." If Sherlock was bored, this was something to do for him. "However, you will need someone to supervise while the test is going on. I'm sure you can find someone. I'll contact you as soon as I know more."

Click.

He knew for sure this wasn't his best idea ever, but it was a way to keep him busy. A young girl stressing trained psychologists?

I've got something for you. Not the usual case, actually just a kid.
Makes psychologists cry. Need to take a test. Text me if you're interested.

-MH

It didn't take him long to receive a message.

Boring, orphanage should handle it.

-SH

Wait, he wouldn't do it?

Bleep, bleep

Another message.

Hold on, makes them cry?
Send her to Baker's Street.

-SH

Mycroft directly called the man from the orphanage.

"Good news, he's accepted. Send the girl together with a caretaker to 221B Baker's Street, London."

Click.

This Mycroft wanted to see.