THE SUNDAY TIMES THRILLER OF THE YEAR 'Perfection, every word, every moment. One of the best books I've ever read' LISA JEWELL 'Wow. Amazing! Loved every page . . . If you are looking for a summer read, I've found it!' HOLLY WILLOUGHBY 'Page-turning time-loop thriller . . . An intelligent puzzle full of heart and good sense' GUARDIAN 'A mind-bending page-turning thriller. Non-stop thrills right from the start. A rare gem' STEVE WRIGHT, RADIO 2 BOOK CLUB 'A spellbinding "whydunnit". A novel with a difference' SUNDAY TIMES 'Skilful, satisfying. Couldn't put it down. Don't miss it!' OBSERVER, 'THRILLER OF THE MONTH' CAN YOU STOP A MURDER AFTER IT'S ALREADY HAPPENED? . . . DISCOVER THE MOST TALKED ABOUT THRILLER OF THE YEAR _________ It's late. You're waiting up for your son. Then you spot him: he's with someone. And - you can't believe what you see - your funny, happy teenage boy stabs this stranger. You don't know who. You don't know why. You only know your son is charged with murder