“Close the door!!” the Doctor gasped, bolting past Rose and hastily slamming the doors shut. “With any luck, the Master’s still stuck inside this TARDIS.” he spoke quickly, still breathing heavily. “Just so long as the doors stay closed, I think that’ll contain him. If he gets out now, the results could be disastrous. Especially since I don’t even know where or when I… wait.” he cut himself off from his panicked rambling, and sharply turned to look at Rose — his body still pressed up against the TARDIS doors — and stared at her for a few seconds before he continued to speak. “…Who are you?” he asked. “And, how did you even get in here? No! Wait, hold on,” he quickly spoke up again before Rose could answer, starting to step away from the doors and towards the unfamiliar girl. “…You called me ‘Doctor’.” he spoke, slower now, trying to sort out his thoughts. “So then, does that mean… that… …Have we met?” he asked, sounding rather confused and perplexed at the situation.