Can you name the Sherlock episode from just the expression on Benedict Cumberbatch’s face?

Take the world's toughest Sherlock quiz and find out if you are a super sleuth...

We know that Sherlock fans like a mystery to solve… so we’ve created a fiendish challenge that even Benedict Cumberbatch’s super sleuth may have trouble with.  


Below are a series of Cumber-faces from episodes of Sherlock. But can you match the expression to the story?