"Mm. Yes. Mummy's quite fond of her. Clara, not so much of his sister. I wouldn't grow attached, Sherlock."

John might be afraid but he also doesn't like being kidnapped! Or hooded. Or driven to whatever this horrible place is and then offered up like a gift to some strange looking creeper with silvery-blue eyes who happens to be sniffing the air.

"Excuse me," John says, an attempt to be polite even as he twists his mouth. "Don't you think you ought to ask me how I might feel about your arrangement? I'm due for a second tour of Afghanistan shortly and--"

Well that has all eyes on him. Mycroft actually chuckles. "My dear doctor Watson, I'm afraid you signed the contract yourself."

John's mouth drops open. "I drew a few circles! And I was four!" he bellows. The woman with Mycroft actually looks about ready to giggle.