From the Sunday Times bestselling and award-winning author Christie Watson, comes a heart-pounding new psychological drama of secrets, lies, morals and medicine. 'Unique and compelling' ELIZABETH DAY 'True literary perfection' EMMA JANE UNSWORTH'Heart-stopping, twisting, funny and frightening' CHRIS WHITAKER'Enthralling, gripping, deliciously dark.

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An immersive, unforgettable gem' RACHEL CLARKE'Propulsive, funny and filled with suspense'SARAH LANGFORDYou're trained to save the lives of others. How far would you go to protect your own? Ruthlessly ambitious Olivia, anxious perfectionist Laura and free-spirited risk-taker Anjali couldn't be more different.

Yet their friendship, which began on the first day of medical school, has kept them inseparable for twenty-five years. As wild all-nighters and exam pressures gave way to the struggles and joys of new motherhood and intense jobs, their bond remained unbreakable.

Years ago they promised that nothing would come between them and that they'd do anything for one another, including burying one night they have never spoken about: a drug-fuelled university party that forced them to make a deadly choice that could still destroy them. When an eerily similar tragedy strikes involving their teenage children, everything the three women have built threatens to shatter around them.

And they are left asking: just how far can you stretch a friendship before it snaps?'Each new twist screeches like nails on plaster'KATHRYN MANNIX'Where medicine meets morality. .

. with page-turning twists' NATHAN FILER'Intelligent, propulsive and disturbing.

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I couldn't put it down' NIKKI SMITH'An extraordinary book'JOHN SUTHERLAND'No-one writes about the drama of medicine like Christie Watson'DR GAVIN FRANCIS. .