Watson's eyebrows raised, but he sat down on the sofa obediently. "I will need to be disguised," he repeated, rather puzzled by this. He watched Holmes carefully, still unwilling to look away from him for too long. Disguises were something new for him, at least. He was rarely thrust into that role.

But then, if it was his life on the line, perhaps this was how it would play out.

He couldn't quite suppress the thrill of excitement that was running through him in this moment.

"Very well. What role will I be playing?"