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''.