Though she knew Expelliarmus didn't come until book two, Robin figured it would be the safest one to teach them, even if it was out of order. She was about to say so when the Doctor stopped and pressed his face against the board. Quickly, she glanced back at the students, but they were all practicing and couldn't see what he was doing.<br/><br/>Suddenly the Doctor was pressing his hand against her face, and Robin gasped loudly. The voice was hissing, cold, and cruel... The voice of the Basilisk from the second book. Her look at the Doctor was terrified, and she looked back at Harry. He was frozen with his wand raised, looking toward the wall to the protests of Ron, who was trying to get him to keep practicing.<br/><br/>"So let me get this straight," Robin said shakily. "We've been put in the middle of some screwed-up version of the Harry Potter books, and we can understand Parseltongue? What is this, Doctor?"