Holmes is not about to be outdone; he isn't thrilled at plunging his head underwater, but Watson is right, and he follows after him. He stays under just enough to be respectable and then resurfaces, flipping his hair back out of his eyes and running his hand over it.

It is cold. But it is also exhilarating, and he hasn't quite stopped laughing, something which will soon be aided by his teeth chattering, no doubt.

"Are you sure you're glad I'm feeling better?" he teases.