The Doctor: One question, just one more. Is this world protected?
[The Atraxi scans through pictures of Cybermen, Daleks, Racnoss, Sea Devils, Slitheen, etc.]
The Doctor: Yeah, you're not the first to have come here. Oh, there have been so many. And what you have to ask yourself is... what happened to them?
[The Atraxi shows pictures of the first to tenth Doctors, finishing with an image of the tenth Doctor that the eleventh Doctor then steps through]
The Doctor: Hello. I'm the Doctor. Basically... run.
Doctor Who / Harry Potter: Harry and the Doctor
Chapter Two: Old and New
"Help!" The First year screamed, panicking when she saw a large bounding thing heading towards her and her friends. Too panicked to draw their wands, they resorted to screaming.
Then, they turned and began to run. However, the slowest tripped over, and was smothered by this... creature.
"Outta the way!" The Doctor bellowed, leaping over a bench followed by the two Quidditch Teams, and watched in desperation as the girl was dragged into the Forbidden Forest. "No! No!"
He remained calm, and then the thing caught his eye. "Cybershade," breathed The Eleventh Doctor.
"Cybershade? What's a Cybershade?" asked Oliver Wood, confused. Everyone now had their wands drawn.
"That is," The Doctor remarked, racing after the Cybershade into the Forbidden Forest, and then... "Ow!"
He hit his head, on air. "Ow!"
"What? Did you just hit yourself on the head?" asked Ron, and whispering to Harry. "I told you he was mental."
"No, this is not good," The Doctor grimaced, stepping back from the place where he had hit himself. "This is really not good."
"Aren't you going to go and save her then?" asked Malfoy, mockingly.
"I would... but there seems to be a barrier in the way," He replied, picking up a rock and throwing it. There was a loud cranking noise as it hit the invisible barrier, and blue marks shot out from it, covering an area which trapped Hogwarts and the Quidditch Pitch, along with Hagrid's hut.
It stayed there for a second, and then vanished. But, the Barrier was still there. "It seems," The Doctor added, angrily, turning to face Harry, Ron, Hermione and the, now slightly worried Gryffindor and Quidditch Teams. "That we're trapped. Trapped by Cybermen, and worse, we'll be facing attacks from inside, and out."
"Inside?" asked Ron, confused. "What do you mean by that?"
"And again," grimaced The Doctor. "Spoilers. Tell me, where are you in your year?"
"Just before the Halloween feast, Doctor," explained Hermione. "Two weeks."
"Two weeks?" yelped The Doctor. "Well, then we haven't got long."
Turning to Harry, he exclaimed, "Get me Professor Dumbledore. I need to tell him that we're in very big trouble."