[Sherlock has been restless himself, missing the familiarity and comfort of his hotel room and hating the frigid cold with every once of his being. Normally, he didn't have much of an opinion of the weather, but extreme temperature drops are enough provoke a slight grudge on his part.]
[He catches a glimpse of Sebastian walking, then pausing at a window, already taking notice of the quiet manner of his walking. Calls over from his own spot somewhere in the dark of the corridor, leaning against the wall, arms folded and shivering slightly from the cold.]