Garda Detective, Tadhg Sullivan, leads a special unit investigating politically motivated crime. A man known only as The Deerstalker is a cancer infecting the Irish political system. He teams up with journalist, Helen Carty, to track down the killer, but when the CIA kill the wrong man, Sullivan finds himself in a race to arrest The Deerstalker before the CIA can take him out.
Detective Tadhg Sullivan’s life seems to be falling apart, since being shifted to Co. Clare from Dublin after falling out with the Minister for Justice and the Garda Commissioner. Tadgh is knocked out of his lethargy when a teenage girl goes missing not far from Ennis where he has been stationed. He's asked to lead the hunt by the local Superintendent and is suddenly catapulted into a world of unimaginable horror.