In the Woods by Tana French

In the Woods is a 2007 mystery novel by Tana French. The central theme is the summer evening, (twenty years prior to the novel's events), when twelve year-old Adam and his two best friends failed to come home from a trip into the familiar woods bordering their Irish housing estate. In the present day, Detective Rob [Adam] Ryan claims that the twin disappearances of his friends and his memory of that afternoon have not had any real effect on his psyche.