Edinburgh, 1791. Isobel Duguid and her friend Clessidro are the stars of the Edinburgh Musical Society. Clessidro sings opera and Isobel sings famously dark Scottish ballads, despite her cavalier attitude to holding a tune. They roam the streets of Edinburgh, enjoying an opulent lifestyle.

One night a note arrives from the mysterious Mrs Abercorn, asking if Isobel's most notorious song, The Fiddler's Wrath, might be included in a book. It's the tale of a prima donna who died of heartbreak after her husband committed murder and was sent to the gallows. Isobel is intrigued. But Mrs. Abercorn's curiosity about the ballad is far more than a fickle interest. When Clessidro goes missing, Isobel is forced to confront her past and the truth about The Fiddler's Wrath begins to emerge.

Using the geography of Edinburgh to guide us through the story, this dark tale becomes more complicated than anyone could have imagined and awakens the chilling retribution of a once buried secret.