‘Pacy, dark and highly entertaining, with a real sense of menace’ Sunday Times bestselling author T.M. Logan

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18-40? PAID CLINICAL TRIAL IN THE CANARY ISLANDS – UP TO £20,000 TAX FREE

It seems like the opportunity of a lifetime. An all-inclusive luxury trip abroad, all you need to do is take a pill every day and keep a diary.

Except you don’t know anything about the drug or what its side effects might be.

The headaches start, a dull ache at first. Every day worse than the last.

Then a body is found.

Everyone is a suspect. Anyone could be a killer. Even you …

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‘The very definition of a white-knuckle ride’ Sunday Times bestseller, B P Walter

‘Brilliant … a proper page-turner’ Sunday Times bestseller, Laura Marshall

‘Such a cool premise … a page-turner that kept me gripped’ Egan Hughes

‘Full of twists and turns … a wild ride I didn’t want to end’ Vanessa Savage

‘Had me not only staying up late to read, but for the first time ever, waking up early too’ Fliss Chester, author of the Fen Churche Mysteries

‘A claustrophobic journey that will have you constantly reevalauting what, and more importantly who, you can put your faith in. Messed with the mind in all the right ways’ Robert Scragg, author of the Porter & Styles series

‘A tantalising premise, this wholly engaging suspense delivers in droves … a first-class thrill ride’ ★★★★★

‘I was sucked in from the beginning and didn’t put it down. What a wild ride’ ★★★★★

‘An ending you won’t see coming … shock worthy’ ★★★★

‘Seriously intense … will have you racing through the pages’ ★★★★

‘Drew me in immediately’ ★★★★

‘Interestingly real and scary concept … it kept me so engrossed’ ★★★★

‘Intriguing with lots of suspense … the explosive climax had my heart racing’ ★★★★

‘Brilliant concept … a captivating read’ ★★★★