The cylinder was key. RealSleep desperately wanted it, and HiberTech would do anything to stop them getting it. I started to see vague shapes as my eyes became used to the darkness, and while they did I could hear the nightwalkers walking past me in the gloom, whispering as they did so, which is a truly unnerving experience. Once, one brushed against me and nibbled me on the arm, and I suddenly wondered how often anyone fed them, and how long they would have to not be fed before they started to feed on one another – or me. The answer, I soon realised, was right about now. I hadn’t fully been aware as my eyes became used to the dim light, but they had grouped around me in the semi-dark and I felt their hands touching me. I tried to push them away but as soon as I moved past two and wrested myself from the grip of a third, another three or four pairs of hands grabbed me and I felt a sharp pain as one of them bit me hard on the side of my head. I yelped, but the noise only invigorated them, and I felt them grip me tighter. I gave up on the soft approach and struggled, shoved and punched, but their numbers were too great and I was pushed to the ground, the nightwalkers murmuring and groaning in an increasingly aggressive fashion in the dim greeny-blue light. This was, I knew, how it worked. An attack began slowly, then rapidly escalated in aggression to a frenzy. I felt several bony fingers try to lift up my shirt to get at my stomach. I was beyond shouting, and just kicked and struggled as hard as I could, the sound of their hungry murmurings growing in my ears. I had come so far, and ultimately – for nothing. The cylinder, worthless to the nightwalkers, would pass to whoever stumbled upon my remains.

Uselessly, I pulled my shoulder bag closer to me and closed into a ball, then had an idea. I ignored the bites and scratches, reached into my bag and pulled out Laura’s camera. I pointed it in their general direction and pressed the shutter.

The flashbulb fired, and in the stagnant gloom of the lobby it was as though a door had momentarily been opened into the Summer. The effect was impressive, and instantaneous. The nightwalkers paused, their minds momentarily scrambled. This wasn’t a trick I’d learned in the Academy, this was a trick I’d learned from Lloyd, two days before.