In a city built to contain what it cannot control, a marked boy survives by staying unseen. He knows nothing of his origins, only that the Concord hunts him and that the places he hides react strangely to his presence. Doors jam. Paths shift. People look past him without understanding why.When a chance encounter forces him into the open, the world around him begins to reveal its rules. From narrow tunnels to river corridors to hidden plateaus, each escape shows a fragment of a larg...