"Or it'll lead us to some completely random part of the city. No, this is our best way out," he says. He disapproves of the sword, but he can't stop her. He can't stop her, and he's pretty sure he might lose a hand if he tried.

He leads the way out of the armory and back towards the well they fell down. The sound of rushing water is louder here, and when he looks up, eyes adjusted to the dark, he can see a network of pipes changing from purple to blue. What does that mean?

"Right," he says as they reach the water again. "If this works, I'm brilliant."