Jon turns, stopping, and stares back into the desert, his narrow shoulders sinking. Too many one-way doors in this world. One-way decisions. And Martin a world away.

He shields his eyes - his own eyes - with his free hand as he looks back towards the city sprawled ahead of them. “Let’s find some shade,” he says tersely, forcing himself to start moving again. The limp is nearly gone, his knee moving more freely than before.