"Ooooh, I think I can manage," the Doctor said, switchly seamlessly into Jack's native tongue. The TARDIS translators still labored his voice with a heavy Londoner's accent, but that came no matter what language he spoke (except his own).

"Now, there has to be some sort of shipping vessels for the water," he inferred. "Even if they don't fish, there have to be...traders, that sort of thing?"

The closer to the city they came, the more the water flattened out on the horizon, until the under-the-surface lightning storm became almost invisible. He wondered if the city even knew it was going on.

"What comes out at night?" he asked. "Why are they afraid?"