Named One of the Best Thrillers by the Washington Post "Possibly my favorite of Pinborough’s yet, and that’s saying something. It’s an absolute rollercoaster of a ride: twist upon twist, expertly handled. I actually gasped out loud several times. So atmospheric and sexy… A triumph!" ― Lucy Foley, New York Times bestselling author, on Dead to Her In this mind-bending domestic thriller from the bestselling author of Behind Her Eyes, Emma Averell worries that her sudden insomnia is a sign that she’s slowly going insane―like the mother she’s worked so hard to leave in her past, soon to be a series on Paramount+ In the dead of night, madness lies... Emma Averell loves her life―her high-powered legal career, her two beautiful children, and her wonderful stay-at-home husband―but it wasn’t always so perfect. When she was just five years old, Emma and her older sister went into foster care because of a deeply disturbing incident with their mother. Her sister can remember a time when their mother was loving and "normal," but Emma can only remember her as one thing―a monster. And that monster emerged right around their mother’s fortieth birthday, the same milestone Emma is approaching now. Emma desperately wants to keep her childhood trauma in the past, but as she stops being able to sleep, she also can’t stop thinking about what happened all those years ago. Is the madness in her blood? Could she end up hurting her family in her foggy, half-awake state, just like her mother? This question of generational trauma haunts her every waking moment. Or is there another explanation for the strange things that keep happening around her? As an increasingly unreliable narrator of her own life, Emma must unravel the dark strands of her past to protect the people she loves… or risk losing it all, including her sanity. Unsettling and utterly addicting, Insomnia is a heart-pounding page-turner of a thriller that will have you up all night. "Another mind-twisting, genre-bending rollercoaster from Queen of WTF Sarah Pinborough." - Ruth Ware “Another clever, original and highly addictive book from the brilliant Sarah Pinborough. Insomnia will keep you up all night. You won’t be able to sleep until you’ve read it. - Alice Feeney, author of Rock Paper Scissors "Even a small dose of Insomnia … will likely give you a bad case of the jitters… It's a nimble suspense story, but it’s even more disturbing as an account of how a restless brain can weaken and lethally doubt itself." - Washington Post “As [Emma] struggles with intergenerational trauma and balancing her work life with her family life, her situation spirals into a dangerous and daunting tale… Insomnia  is a natural follow up to [Pinborough’s] bestselling thriller  Behind Her Eye s.” - Entertainment Weekly "Insomnia successfully combines domestic suspense with a psychological thriller.... Pinborough’s skill at showing characters at their best and worst is a mainstay of her some 20 novels." - Florida Sun-Sentinel "When you look up the word 'gripping' in the dictionary, you see a few pages of Sarah Pinborough's Insomnia . I loved this book. I felt like I was on a treadmill hell-bent on making my heart race." - Caroline Kepnes, New York Times bestselling author of You and Hidden Bodies "Insomnia is an 'unreliable narrator' thriller done right—Pinborough expertly draws readers into Emma’s increasingly terrifying world, where no one and nothing can be trusted.... One of the most downright entertaining thrillers I’ve read in ages." - Crime by the Book “Pinborough writes like an absolute dream about an absolute nightmare. I loved it!’ - Richard Osman, author of The Man Who Died Twice "The inimitable Sarah Pinborough reaches new heights of ingenuity in Insomnia, the definition of up-all-night reading" - Erin Kelly, Sunday Times bestselling author of He Said/She Said on Insomnia “Pinborough [is a] uniquely twisted genius… Emma has given a few women reason to dislike her, but there is a spooky factor involved here that leads her to think this is something that has been on the way for quite a while. A real mind-twister guaranteed to please.”  - Booklist on Insomnia “Pinborough specializes in steamy mysteries… cooked up in the outer reaches of her imagination… ’What could go wrong?’ a character asks cheerfully at the end. Maybe it’s the equivalent of the hand emerging from the grave at the end of the movie ‘Carrie’. Or maybe not.” - New York Times Book Review "Insomnia  is filled with shocking twists and turns." - Novel Suspects “Oh. My. Word. Sarah Pinborough is the queen of the impossible, and her latest heart-pounding thriller will have you up all night.” - Clare Mackintosh, author of Hostage on Insomnia "Absolutely brilliant, completely unputdownable and so satisfying – Pinborough just gets better and better" - Jenny Colgan “Gripping… As she strives to figure out who’s trying to destroy her and why, the suspense becomes almost unbearable.” - Publishers Weekly on Insom