They thought he was scared all the time because he was a coward. The truth was, only he could see the world clearly enough to know how truly scary it was. He saw things and heard things, and every single one of them was real. Horribly real. If Humanity knew what they shared the world with, what walked their streets by day and snuggled up beside them at night; if they could see it all, just for a moment . . . they’d all go stark staring mad. Happy had learned long ago not to talk about it. People didn’t want to know. But he had no choice. If the Boss knew what he faced every day, she’d give him a medal. Or, if she was really feeling kind, a lobotomy. And maybe then he’d get some peace at last.

Ghosts are the only ones who never have to feel scared. Because the worst thing in the world has already happened to them.

It didn’t take JC long to decide that the whole of the Oxford Circus Tube Station was infected. Everywhere he looked, something looked disturbed, subtly alien. It was hard to judge distances in the unrelentingly fierce light. He walked down one platform for ages, without reaching its end. Eventually he had no choice but to turn around and go back; and there was the exit he’d come in by, waiting for him. Directions become treacherous and signs untrustworthy. The same archway took him to a dozen different places, including one painfully over-bright corridor that twisted and turned like a maze. The angles between floor and wall seemed subtly wrong, and his head ached trying to figure out why. And what shadows there were were very dark.

He particularly didn’t like one tunnel-mouth, at the end of a certain platform. Its interior was too dark, too deep, as though it might go on forever. There was no sound, and not a trace of movement, but still he kept expecting something to come crashing out of the tunnel-mouth at any moment and sweep him helplessly away to somewhere unbearably awful. He made himself stare into the darkness until his breathing steadied and his hands stopped shaking, then he very deliberately turned his back on the tunnel-mouth and walked away, head held high.

Everywhere he went, the tunnels and platforms were full of odd sounds and weird smells, and things glimpsed out of the corner of his eye that were never there when he turned to look at them directly. He kept thinking he caught glimpses of people, turning the corner ahead of him, or peering briefly out of open archways, but they were never there when he arrived. And though he couldn’t quite put his finger on it, there was something subtly wrong about these people that disturbed him strangely on some deep unconscious level.