Shhhh And Think

Sherlock trying to make John think, remember what he seen on the wall.

But I think Sherlock was a bit annoyed when John said he had taken a picture Good work on John's part

I did the screenshot when i was watching "The Blind Banker" on itunes

Disclaimer
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Sherlock played by Benedict Cumberbatch
John played by Martin Freeman

Sherlock owned by the BBC