High on the mountain above his home town, Fergus makes a chilling discovery: the body of a girl, hidden deep in the bog. And it looks like she’s been murdered – or sacrificed.As Fergus tries to make sense of the word around him – his brother on hunger-strike in prison, his mam and da arguing over the Troubles, and his growing feelings for Cora – a little voice comes to him in his dreams, and the mystery of the bog child unfurls.