Rook Collins is reliving the most horrific moments of his decade of combat service overseas when he is awakened by the sounds of automatic gunfire outside his Los Angeles apartment. Before he can even react to the chaos around him, though, he discovers a suicide message from his brother and races off to find him. Agents Delphi and Ferrous are in the business of explaining the unexplainable. The recent discovery in Mexico of a mysterious green skeleton, identified as belonging to one of their own, puts them on a search for answers. The first destination on their list, the now abandoned psychiatric prison and last known address of the former agent.