FROM THE MULTI-MILLION COPY BESTSELLING AUTHOR 'An inspired set-up. A clever dynamic that paves the way for a cat-and-mouse thriller. Propulsive.' SUNDAY TIMES 'A maze-like game of revenge. Unsettling. Blends a critique of wellness culture with a slow-burn feminist thriller.' OBSERVER 'If you spend all of January trying to avoid diet culture, then you need to read this book.' COSMOPOLITAN All Liam ever wanted was to help Cassie reach her full potential; to push her body to new extremes. Exercise, determination, being the optimum versions of themselves. Together forever. And Liam always knew what was best. Nothing could break their intense love for one another, not Liam's obsessive desire for physical perfection or his relentless control of every aspect of Cassie's life. Until the day he pushed Cassie far beyond her limits, and she walked out of their flat and away from their toxic relationship for good. Two years on and Cassie is stronger, fitter, healthier than ever before. And then she sees him - Liam - those green eyes, those stirring muscles. Something inside her flips. But she holds the power now. It's Liam's turn to sweat. 'Will have you glued to the story through every twist and turn. I absolutely adored it!' KATE HAMER, bestselling author of The Girl in the Read Coat 'Sweat is like nothing I've ever read before. So addictive it made me miss a tube stop, so unsettling it made me think twice about going to the gym!' SARA COLLINS, author of The Confessions of Frannie Langton 'Taut, compulsive, and unsettling ... It had me holding my breath until the final, brilliant end' JENNIE GODFREY, No.1 Sunday Times bestselling author of The List of Suspicious Things