Anyone seen The Reichenbach Fall yet?
Focus
Mycroft seemed to forget from time to time that he didn't have an umbrella and would instinctively start to swing his hand when he was gesturing to something, trying to point at it with his brolly, but would smoothly cover this movement. John was becoming a little more focused on that when Mycroft said mildly, "I assumed you would have been fascinated by this, John."
John snapped into focus and found his eyes magnetized to a portrait of a teenaged Sherlock hanging on the hallway wall. "…Oh."
The same crystal eyes and serious face transposed on a teen. John smiled.
Prompt was from my sister Siena, and it was "Portrait."