The Doctor took a second examining the readings he'd got off the wallet. Okay. Deadlocked doors, little blue men, ponies turned into humans, but this was the strangest thing he'd encountered aboard the Tranquility. He paused and stared at the sonic for a moment, then snapped it shut, ready to resume the conversation.

"Noted." He reached out a finger and tapped John on the chest. "Where you from, by the way?" He had been assuming Earth, but after John had produced that hammer...