Jack is five. He lives with his Ma. They live in a single, locked room. They don't have the key. Jack and Ma are prisoners. 'This book will break your heart . . . It is the most vivid, radiant and beautiful expression of maternal love I have ever read' Irish Times 'Startlingly original and moving . . . Endearing and as utterly compelling as THE LOVELY BONES' Scotsman 'I've never read a more heart-burstingly, gut wrenchingly compassionate novel . . . As for sweet, bright, funny Jack, I wanted to scoop him up out of the novel and never let him go' Daily Mail 'This is a truly remarkable novel. It presents an utterly unique way to talk about love, all the while giving us a fresh, expansive eye on the world in which we live' New York Times Book Review