I blink awake to the sound of whispering, and look around. Automatically, I do a count. And then I am upright, my heart racing. I count again. “Girls,” I say, trying to sound calm. “Did you see Evie?”

It was meant to be a celebration. A team sleepover in the school gymnasium: movies, pizza, hot chocolate. I walk among the girls, checking they’re ok. They collect in groups and giggle, play truth or dare.

Then there’s Evie. Always the outsider, just like I was. She sits apart, fiddling with her long blonde hair. It seems like she wants to speak to me,...

I blink awake to the sound of whispering, and look around. Automatically, I do a count. And then I am upright, my heart racing. I count again. “Girls,” I say, trying to sound calm. “Did you see Evie?”

It was meant to be a celebration. A team sleepover in the school gymnasium: movies, pizza, hot chocolate. I walk among the girls, checking they’re ok. They collect in groups and giggle, play truth or dare.

Then there’s Evie. Always the outsider, just like I was. She sits apart, fiddling with her long blonde hair. It seems like she wants to speak to me, but there’s never a good time.

And when we wake up the next day, stiff and groggy, Evie is gone.

I know the girls are lying about something. I see it in their averted eyes, their sullen silences. But how can I challenge them, when I’m the worst liar of all?

Because the truth is, I’m desperate to find her. I’d do anything to protect these girls. But it’s also true that the longer she’s missing, the more risk I’m running.

You see, the night she vanished, I did something no one can ever know