But once he was down in the tunnels, moving in scurrying little runs through the fiercely bright light, from shadow to shadow and hiding-place to hiding-place, things happened that destroyed what little confidence he had. Bad things. Billy saw bad things. He saw ghosts and monsters and horrible, impossible things, nightmares broken loose and running wild in the world; and he ran and ran until finally he saw the worst thing of all. The ghost of the beautiful woman he’d killed the day before. She looked just as beautiful, dressed in white like an angel, her hair the same colour as the blood that had spilled down her back when he pulled out the knife.

He crouched, in the deepest and darkest of the shadows, watching her with wide, confused eyes, scared out of his mind. He didn’t feel guilty, and he didn’t feel sorry; he knew now he’d only done what he’d done in the service of his Protector. But he was terrified that these big and important people, with their big and important voices, would tell the authorities what he’d done, then everyone would know. He’d be caught and punished and locked up in a cage, forever and ever. Billy had gone through most of his life afraid of being punished.

First, he spied on JC and his team, then he spied on Natasha and Erik, trying to figure out who they all were and what they were doing. Trying to figure out what he should do. He saw them do amazing and awful things, then he saw them fight each other, and he saw them working together. None of it made any sense to Billy. The ghost was there, too, acting like she was still alive; and once she turned her head and looked right at Billy. He shot off immediately, running and running and not looking back, and when he finally stopped to glance fearfully around him, he was on a platform he didn’t recognise.

He moved slowly, diffidently, down the platform. He was meant to be there. He could feel it. His unseen Protector had brought him there, for some important purpose. A train pulled into the station, moving smoothly and silently—a dream of train, come just for him. Billy made ooh and aah noises. The train was painted in bright colours, from end to end, all the fresh and vivid shades of childhood. A great big toy train, just for him. Bright and cheerful and not threatening at all. (So why were all the hairs standing up on his arms and the back of his neck?) The Protector had sent this train, the Protector who had hidden him from the authorities, who loved him and cared for him and looked after him. Who now called to Billy in the sweetest of voices, calling him . . . to come and meet his Protector, and get his reward for killing the beautiful woman.