She's glimpsed a silent town lying beneath the valley “ a place where the streets and landscapes are the same, but where daylight never reaches. But as Kate begins to investigate the silent town, a shocking multiple shooting occurs on the mountain that bookends the valley, Witness Mountain. Kate is forced to suspend all else and focus on the case at hand. How did a frail, elderly man manage to shoot his family? Did he have the help of his grandson, a teenage boy who can't account for his whereabouts that morning? The height of a devastating fire season hinders Kate at every turn. Through the smoky veil hanging in the valley, Kate begins to suspect a connection between the Witness Mountain shootings and the silent town. But the dangers are far greater than Kate ever imagined. There are people who will kill to conceal what they know and what they've done.