The Doctor looked back over his shoulder to Jack. He opened his mouth to question him, but the clamp in his hands undid the lock.

Something private, maybe? Very personal? The Doctor felt a surge of panic as he worried what information the link might pull from him, or force him to call the answer to Jack for.

After all, the Doctor didn't always think in Gallifreyan.

He raced through the next door and threw the clamp. He took in a deep breath and then let out a cough. "Can you smell that?" he asked. "Like...mildew, decay."