Mycroft looked like he was going to say something, then, in a very unusual bid for himself, closed his mouth again, and simply said. "Yes. We will be in touch."

Anthea silently walked them back out until they were back onto the pavement outside the front of MI5.

"Well." Sherlock said, with a little smirk. "That was... entertaining, to say the least." He chuckled, a low rumble.

"Where to next, O wise leader?"