Adri trained for pain, heat, and exhaustion - she didn’t train to outrun a killer

'A masterclass in atmospheric writing,...this is gold medal storytelling and I raced through it’ JANICE HALLETT

‘Tense, exhilarating and deeply immersive, I raced through this epic ultramarathon thriller’ LAURA STEVEN

‘Smart, visceral and deliciously dark and twisty’ LOUISE MINCHIN

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It’s the ultimate test of endurance: two-hundred-and-fifty miles in the brutal heat of the Sahara, with only the supplies you can carry on your back.

Adri is ready. Returning to ultra-running in the wake of a scandal, she needs to prove to herself – and her young son – that she’s a winner.

When a fellow runner is badly injured, Adri knows something isn’t right. Yet in a race this extreme, even a dead body can be explained away.

But there’s a killer stalking the hot sand. And the problem with running faster than everyone else, is that you’re miles ahead of anyone who can save you...

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PRAISE FOR RUNNER 13

'A thrilling race to the finish' OBSERVER

‘Brilliantly atmospheric and with relentless pace, Runner 13 is one of the most propulsive adventure thrillers I’ve read. It will leave you gasping for breath. I loved it!’ LIV MATTHEWS

‘Amy McCulloch does it again! Runner 13 is an absolute scorcher of a thriller that examines the lengths we are willing to push ourselves for what's right’ SARA OCHS

‘As soon as I finished it I ordered all Amy's other books. A breathless, complex thriller. I steamed through it’ JANE FALLON

‘A thriller set around the fascinating world of ultra-running where there's always the threat that even the race might kill you. Utterly breathtaking - absolutely loved it. Amy's best yet’ CATHERINE COOPER

'Fascinating, exciting...terrifyingly convincing' LITERARY REVIEW

'The twists will have you racing through every page' WOMAN AND HOME