The New York Times bestselling master of suspense returns to his beloved series, adapted for TV (CBS's Tracker, starring Justin Hartley) as reward seeker Colter Shaw races against the clock to save a flooding town from a full-fledged disaster, where the culprit lurks in the plain sight.
When a levee collapses in Hinowah, a small town in Northern California, Colter Shaw is brought on by his sister, Dorion, a disaster response specialist, to help locate a family swept away by the raging water, with mere hours to survive. 
But after a surprise attack along the river obstructs Colter's urgent search, the siblings are forced to consider a new reality: Is the levee at risk of failing from natural causes, or is someone sabotaging it? Colter and Dorion must race against a ticking clock to uncover the truth and save the citizens before the village washes out completely, destroying everything and everyone in its path.