3 PM, somewhere in Hackney.

The discovery of a body outside an apartment building had left the police grasping for leads. Lestrade, realising the investigation had reached an impasse, summoned Sherlock and John. After a meticulous examination of the deceased, Sherlock straightened up, absorbing the details of their surroundings. It was then that his keen eyes settled on an unfamiliar face. A person stood in close proximity to the police tape, observing the activities of everyone present.

"John," Sherlock uttered, quietly drawing his colleague's attention. "Look over there.”