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 dark world of intrigue and betrayal. 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 .