Torrential rains from Hurricane Ida pour into volcanic faults, and the resulting steam explodes--destroying an elementary school, killing and injuring students and staff. When the school's contractor and architect are subsequently murdered, the question arises: was the school placed on the fault on purpose? As Koa searches for the truth, his brother collapses in jail from a previously undiagnosed brain tumor. Gradually unraveling the obscure connections between multiple suspects, Koa uncovers a 40 year-old conspiracy. But when his investigation becomes entwined with his brother's future, Koa must choose between justice for the victims and his brother's freedom. -- Adapted from jacket and chapter one.