FBI Agent Shawn Cleary has hunted twin serial killers Trevor and Mitchell Gant since the series began. Their final chess match involves multiple moves as it careens toward a heart-stopping confrontation.
Detective Evan Parker is being haunted by the past. After two tours in the Afghanistan War as an Army Ranger, he thought the horrors that he witnessed there were behind him. But the brutal death of his partner has now opened a dark hole of memories that are threatening to swallow Parker alive. Desperate to maintain his grip, he turns his attention to the last unsolved case that his partner left behind: the murder of Hymie Villarosa.