The Boy Who Followed Ripley: A Virago Modern Classic by Patricia Highsmith
When a troubled young runaway arrives on Tom Ripley's French estate, he is drawn into a world he thought he'd left behind: the seedy underworld of Berlin, involving kidnapping plots, lies and deception. Ripley becomes the boy's protector as friendship develops between the young man with a guilty conscience and the older one with no conscience at all. The Boy Who Followed Ripley is followed by Ripley Under Water.