Self-destructive, pigheaded, and over-fond of the bottle, Jack Taylor (Iain Glen, Game of Thrones, Downton Abbey) is a forty-something ex-cop trying to earn a living as a private detective in his native Galway. Taylor has burned a lot of bridges, but he still has a knack for uncovering ugly truths. In his new trade, Taylor finds evil at every turn: the serial murders of young female factory workers, a vicious vigilante group executing summary justice, and a sadistic nun dubbed "Lucifer" by her former charges.