An atmospheric, chilling page turner from rising star Martin Stewart, reminiscent of Stand by Me and Stranger Things.

Sep, Arkle, Mack, Lamb and Hadley: five friends thrown together one hot, sultry summer. When they discover an ancient stone box hidden in the forest, they decide to each make a sacrifice: something special to them, committed to the box for ever. And they make a pact: they will never return to the box at night; they'll never visit it alone; and they'll never take back their offerings.

Four years later, a series of strange and terrifying events take place. Someone broke the rules, and now everyone has to pay.

But how much are they willing to sacrifice?

There are 400 pages in this book. This book was published 2018 by Penguin Books Ltd .

Martin Stewart has previously worked as a recycling technician, university lecturer, barman, golf caddy, and English teacher. Having written his first book on Post-Its as an eight year-old, it was his time back in the classroom that made him understand the unique joy of writing for younger readers. A native of Glasgow, where he still lives, he enjoys buying books to feed his to-be-read pile, and combining the city's urban splendour with walks on the beaches of Scotland's west coast. Martin's first novel, Riverkeep, was longlisted for the Guardian Children's Fiction Prize. Follow him on Twitter: @martinjstewart.