Twenty years later, the found boy, Rob Ryan, is a detective on the Dublin Murder Squad and keeps his past a secret. But when a twelve-year-old girl is found murdered in the same woods, he and Detective Cassie Maddox—his partner and closest friend—find themselves investigating a case chillingly similar to the previous unsolved mystery. Now, with only snippets of long-buried memories to guide him, Ryan has the chance to uncover both the mystery of the case before him and that of his own shadowy past.