When Thorn’s goddaughter, Stetson, pleads with him to drive her from Key Largo to Kentucky to view the longest eclipse in decades, it seems like a harmless request. With her parents, Sugarman and Kathy, honeymooning in Hawaii and Thorn left to chaperone their daughter, Thorn decides to fulfill Stetson’s wish, despite her parents strong disapproval of the plan.

It’s a fateful decision that puts Thorn and Stetson in the crosshairs of a mass murderer whose goal is to achieve a record-setting body count. Dozens are killed and Thorn and Stetson are gravely injured.

But worse than the physical pain for Thorn is the rupture of the deep friendship he and Sugarman have shared since childhood. There seems to be nothing Thorn can do to make amends for causing Stetson’s grievous wounds. He’s lost Sugarman, his truest friend.

Until a woman walks into his stilt house one night a month after the eclipse shooting. A woman whose twisted story lures Thorn back to Kentucky then on to the nation’s capital, a journey that will give him a second chance to stop a mass shooting, one that threatens everyone he loves.