Cosette walks through the door of one hundred North one hundred Up and the walls are gone.

It’s flat, empty and cobbled, twenty feet wide, two yellow lights and some dead leaves. There’s a bench and a sign that says 12. The tracks below are exactly as long as the platform. Beyond the platform, it’s black.

Her footsteps sound different: this place is open, echoless. Cosette walks to the bench and tucks the last map page inside her jumper. She sits with Millicent on her lap. She watches a lonely moth whirl around one cast-iron lamp, brave against the dark.