James Hutton agreed to cross nine hundred miles of open Pacific in a boat with no engine and no GPS—only the stars, the swells, and the ancient wayfinding techniques he'd spent years studying. Four days out, he discovers someone has sabotaged his water supply, and the nearest help is far beyond reach. Alone on an indifferent ocean, James must survive on wits, training, and a stubborn refusal to die—while piecing together who wants him dead, and why.