THE INSTANT TOP TEN SUNDAY TIMES BESTSELLER THE BOOK THAT WILL DEFINE A DECADE ‘Sensational. Gripping, haunting, and beautifully written’ RICHARD OSMAN ‘The biggest mystery thriller since Gone Girl

What really happened on Day One? Everyone has their own version of what happened to the school that day: The survivor, who escaped but is now trapped in a lie. The newspapers, hellbent on tu