';Riveting, profoundly moving' Emily St. John Mandel, author ofStation Eleven';Beautiful and devastating' Red';Thought-provoking and profound' CosmopolitanImagine a world where sleep could trap you, for days, for weeks, for monthsShe sleeps through sunrise. She sleeps through sunset. And yet, in those first few hours, the doctors can find nothing else wrong. She looks like an ordinary girl sleepin...