PROLOGUE

      You know that split second when you wake up and the line between your nightmares and reality is blurred? The darkness and the icy burst of fear in my stomach tell me it’s a dream; but the damp, decaying smell and the unfamiliar sound that I can’t quite put my finger on feel horribly real. I don’t move, and I try not to make a sound. I even hold my breath, and just listen. There’s a faint beeping noise close by, only it’s distorted somehow and I can’t focus on it. As I’m trying, I notice something else behind it, a harsh sort of rasping, rising and falling in the background. The more I try to isolate the sounds, the harder they get to hold on to. Maybe if I just lie still, and try not to panic, I’ll slip into a different part of my dream; a nicer part, one involving Tom Hiddleston reading to me in bed or… only I don’t know because I can’t lie still, I’m starting to shiver with the cold. The beeping sound is changing – it’s getting louder and faster now; uneven, frantic almost. I shiver harder, and then the rasping stops and the beeping switches down to just one, low, continuous tone and it’s panic one, Chloe nil. I shoot bolt upright in what doesn’t feel anything like my bed, and force my eyes open, except… I don’t. They don’t. I don’t move. My brain’s screaming: Up, UP! Get up! But nothing happens. I can’t move.

      It’s the worst kind of nightmare, the kind where you’re trapped inside your own head, only I don’t think any nightmare could feel this real, for this long. I should’ve woken up screaming by now. And someone should be here: Mum, turning the light on, telling me it’s all right; or Dad, shouting What’s all the noise about. Only there’s no one.

      And then the beeping stops, and I think maybe it’s over.

      In the sudden, brief silence that follows I hear Dad’s voice after all, and he is shouting, and the relief is almost as intense as the panic was, but it’s