"What's your speciality?"

The question pulled Sherlock out of his musings, and he looked up to find he was being offered a cup of tea.

"My speciality?"

"You're a scientist, Mr Holmes, so what are you? Chemist? Physicist?"

"Chemist, with a further interest in Forensics, but…. I get the impression you already knew that." He took a sip of his tea. "After all, why else would you break me out of Barrymore's little torture chamber."

Returning to his chair John leaned forward, his blind eyes staring at Sherlock's face.

"I know there is more to your kidnapping than your profession, more than the fact that Moriarty himself had targeted you."

John considered his next words carefully, feeling the tension in the room as his guest waited.

"He has access to chemists and forensic pathologists at Bart's, quite legitimately too, as they work on his patch." Rubbing a hand over his face, he continued. "I won't ask you to break any confidences, so I'll talk and you listen."

John went on to talk about a Government official, one with power and connections, one who had, apparently, disappeared after Moriarty's failed coup.

"The official was called Mycroft Holmes. That name, and the fact that Barrymore wants him, seems too much of a coincidence to me."

Sherlock grimaced.

"You're right John, he's my brother."