I’m not sure what to make of this book. The idea is brilliant. People have lost the ability to sleep. They’re still tired, but relief does not come. As days turn to weeks and more, the insomniacs scramble their syntax, become muddled, fail to recognize their children, and turn murderous. Those who can sleep must hide it or become the target of a deranged mob. A variety of characters are highlighted in rotating chapters. These characters are loosely connected, aware of what is happening, and can still rest. They leave home, make alliances, witness atrocities. That’s it. It’s a road trip zombie story. Calhoun does a great job of creating the dulled, desperate feel of overtiredness. I prefer a little excitement and resolution.