The Queen of the psychological thriller returns with her latest chilling novel.

When a skeleton is discovered hidden at the top of a crumbling, gothic building in Edinburgh, Detective Chief Inspector Karen Pirie is faced with the unenviable task of identifying the bones. As Karen's investigation gathers momentum, she is drawn deeper into a world of intrigue and betrayal, spanning the dark days of the Balkan Wars.

Karen's search for answers brings her to a small village in Croatia, a place scarred by fear, where people have endured unspeakable acts of violence. Meanwhile, someone is taking the law into their own hands in the name of justice and revenge, but when present resentment collides with secrets of the past, the truth is more shocking than anyone could have imagined . . .