When it comes to saving yourself, who will you betray?

Louise has a shadowy past that she wants to break free from and when she develops an unlikely friendship with Isabelle, her neighbour, she finally finds the family she’s always yearned for.

But Louise knows more about Isabelle than her new friend realises, more specifically about her imprisoned husband – and the circumstances behind his arrest.

Louise is faced with a choice: to continue lying to her only friend or tell the truth and ruin any chance she has of starting over…

An addictive and gripping psychological thriller that will have you questioning everything. Perfect for fans of Liane Moriarty and Celeste Ng.

Praise for Alison Stockham:

‘It begins with a visceral shock and evolves through unexpected twists and turns to a deeply felt and satisfying conclusion’ Greg Mosse

'This was a beautifully written debut that handles a difficult subject matter with a delicacy that makes me excited to read whatever Alison Stockham writes next' Stacy Thomas

‘This book comes with a killer hook… Sibling relationships, post-natal depression, marriages with cracks that turn into fissures and the nature of friendship are all explored via a pacy storyline’ Jo Leevers

'Stormed through The Cuckoo Sister by Alison Stockham... A fascinating premise and she handles it admirably, with nuance and compassion' Laura Pearson

'Beautifully poignant and utterly compelling' Alex Stone

'An emotional and relatable story' Louise Douglas

'Such a clever and engaging book with a late twist that I absolutely did not predict' Beth Miller

'A brilliant concept delivered with real emotional depth and clout. I felt for each and every character in this story of family, guilt and deepest desires' Gytha Lodge