Click. The viewscreen focuses in on 221 Baker Street, and a pair of narrowed grey-green eyes quickly analyzes the scene. Only one inhabitant, apartment B obviously abandoned. No John Watson, then.

Click. A second screen lights up. This one is of the old apartment John was staying in before meeting Sherlock. The view on this scene, however, betrays the fact that the apartment is currently empty and the home of a married couple in which the husband is a clerk and the wife too interested in appearances.

Click. A third screen. A familiar, hospital issue cane leans against the doorframe. There.