Secret military weapons, saboteurs, a volcanic eruption—and a probe of Chief Detective Koa Kane's criminal past

On Hawaii Island, a volcanic earthquake disrupts an abandoned cemetery—unearthing the body of a woman mutilated by her killer to conceal her identity.

The search for her identity leads Hilo Hawaii's Chief Detective Koa Kane to a mysterious defense contractor with a politically connected board of directors. Defying his chief of police, Koa pursues the killer, only to become entangled in an FBI espionage investigation of Deimos, a powerful secret military weapon. Is the FBI telling all it knows—or does it, too, have a duplicitous agenda?

At the same time, Koa—a cop who thirty years earlier killed his father's nemesis and covered up the murder—faces exposure by the dead man's grandson. Koa is forced to investigate his own homicide, and step by step, his cover-up unravels until another man is falsely accused.

Can Koa stand by and let an innocent man pay for his crime?