"Her books are fictional Robin," the Doctor replied sternly before charging through the crowd of children, almost knocking some of them down as he moved, and pressing himself to the wall opposite them. He listened at the wall with an intense look on his face. He had such concentration that it almost seemed as if he was trying his best to find a fault, something that would tell him that what they were seeing wasn't real.<br/><br/>After a minute he let out a cry of frustration and walked back, pushing a teenager out of his way, who cast him a scornful look before continuing on.<br/><br/>"Robin, punch me in the face," the Doctor spoke firmly before pointing to his cheek and tilting his head in preparation. "Come on, punch me right in the face, as hard as you can."