Marianne Percival has been summoned to Skein Island by its owner, the reclusive Lady Amelia Worthington. There’s only one problem – Lady Worthington has been dead for years. So who wrote the summons? And what does it have to do with the disappearance of Marianne’s mother? All the answers lie on Skein Island. It’s a retreat, and it holds many strange relics from a time of heroes and villains. At its centre stands a library that holds the stories of thousands of women. And underneath the library there is a secret that Amelia Worthington kept from the world. A secret that is about to be uncovered.