In a derelict town in Argentina's pampa, a decades-old betrayal simmers among a group of friends. One returns from serving time for a crime he didn't commit; another, a policeman with ties to the military regime, discovers his wife's infidelity; a third lays dying. And an American missionary has been killed. But what happened among these men? Spinning through a series of voices and timelines, Glaxo reveals a chilling story of four boys who grow up breaking horses and idolising John Wayne, only to become adults embroiled in illicit romances, government death squads, and, ultimately, murder.