It's a double mystery: Two young men have vanished, and the investigation leads to two troubling clues in two different locations, a scorched van and a peculiar bloodstain in an abandoned airport hangar. As Banks and his team scramble for answers, the inquiry takes an even darker turn when a truck careens off an icy road in a freak hailstorm. In the wreckage, rescuers find the driver, who was killed on impact, as well as another body, a body that was dead well before the crash. Snow falls. The body count rises. And Banks, perceptive and curious as ever, feels himself being drawn deeper into a web of crime, and at its center something, or someone, dark and dangerous lying in wait.