Imagine a world where sleep could trap you, for days, for weeks, for months... Karen Thompson Walker's second novel tells the mesmerising story of a town transformed by a mystery illness that locks people in perpetual sleep and triggers extraordinary, life-altering dreams. One night in an isolated college town in the hills of Southern California, a first-year student stumbles into her room and falls asleep. She sleeps through the morning, into the evening. Her roommate cannot rouse her. Neither can the paramedics, nor the perplexed doctors at the hospital. When a second girl falls asleep, and then a third, panic takes hold of the college and spreads to the town. A young couple tries to protect their newborn baby as the once-quiet streets descend into chaos. Two sisters turn to each other for comfort as their survivalist father prepares for disaster.