Caleb Zelic can't hear you. But he can see everything.

Caleb's addict brother, Anton, has been missing for months, still angry about Caleb's part in his downfall.

After almost giving up hope of finding him, Caleb receives an anonymous message alerting him to Ant's whereabouts and warning him that Ant is in danger. A man has been shot and Ant might be next.

Caleb reluctantly leaves his pregnant wife's side and tracks his brother to an isolated island where Ant has been seeking treatment. There, he finds a secretive community under threat from a sniper, and a cult-like doctor with a troubling background.

Caleb must hunt for the sniper to save Ant, but any misstep may ruin their faltering reconciliation, and end in death. When body parts begin to wash up on shore, it looks like the sniper is growing more desperate...