Shoot the smiley by clicking it! It'll get faster and faster the more you shoot it. Miss 5 shots and Mrs. Hudson takes away your gun! Good luck. P.S. Aim for the forehead, and eyes. It sometimes counts as a miss if you click the middle or the mouth :/
I DO NOT OWN SHERLOCK BBC. ALL GRAPHICS BELONG TO BBC. No copyright intended. Thanks to @mister00 for helping me :)