*Featured in Good Housekeeping’s 50 must-reads books for the summer*

‘Instantly gripping, it’s a masterpiece' Andrea Mara

'An immersive thriller that constantly surprises' Catherine Ryan Howard

'So gripping' Elly Griffiths

'It’s a bloody masterpiece!' Liz Nugent

‘Twisty and incredibly gripping’ Claire McGowan

A woman is found in bloodstained clothes on the lonely coast of County Mayo.

At first, she won’t speak. Then a name comes: Ruth. And a story about her missing friend: Maura.

Ruth says she and Maura were staying in a clifftop house together. But there’s no trace of her there. Nothing but a pool of blood.

Ruth says the pair fought in the days before Maura disappeared. But the locals say they only ever saw one woman.

Ruth swears she’s telling the truth, but do the answers really lie in everything she didn’t say?

‘An intelligent psychological drama of misplaced and exploited affection that really gets under your skin’ Literary Review

‘A killer twist to fool even the most cynical’ Sam Baker’s Substack, The Shift

‘A nail-biting thriller’ Irish Independent

‘A mazy plot, wrongfooting and surprising us at every turn’ Guardian

‘This atmospheric mystery is a wild ride – and if you think you’ve guessed it, guess again!’ Heat

‘A superlative mystery about female friendship and betrayal … pitch-perfect’ Erin Kelly

'Destined to be one of the best novels of the year' Abir Mukherjee

'A page-ripping mystery but also a story of regret, infatuation, mistakes made and repaired' Abigail Dean

‘Casey is on top form in this twisting, shifting story of betrayal, trust, and survival’ Sarah Hilary

‘Jane Casey remains an unadulterated genius … I had the very BEST time’ Lucy Mangan

‘If you're not already a fan, prepare to become one’ Cass Green

‘There's that dangerous spark in each relationship’ William Shaw

‘A masterclass in shape-shifting the truth’ Siobhan MacDonald

‘Having wrong-footed us throughout, Casey gifts readers a deeply satisfying ending’ Catherine Kirwan

‘Clear your diary and switch off your phone’ Gill Perdue

‘An absolute page turner’ Sheila Bugler

‘Kept me guessing right until the very end’ Jennifer Bray

‘The County Mayo setting is beautifully written, the characters are authentic’ Fiona Gartland

‘It weaves together deception, secrets, friendship and mystery in one irresistible story’ Mary Watson