In this ITV adaptation of Jake Arnott's bestselling novel, the story follows three men who’ve never met, three lives inextricably linked by a shocking triple murder, and a manhunt that spans three decades... It’s August 1966, the long hot summer of World Cup euphoria is suddenly shattered by the brutal slaying of three policemen. The fates of a detective, a journalist and a villain are irrevocably bound up with this shocking event. For Frank Taylor, a Detective Sergeant on the Met's fast track, the shooting claims the life of his best friend, a tragedy which might have been avoided, and for which he will endure a lifetime of guilt... For Tony Meehan, an ambitious journalist, it is more than a career-making front page scoop; the slaughter he witnesses awakens a violent impulse within him and finding the perpetrator becomes an all-consuming 20 year obsession. For Billy Porter, war-time hero turned petty thief, it's a plan that went fatally wrong; a gratuitous act of violence from which he must spend two decades running. A tale about corruption and obsession, it explores how the consequences of one single act of brutality reverberate across two decades and reveals a creeping decay at the heart of a morally degenerate society.