The emperor's reign has lasted for decades, his mastery of bone shard magic powering the animal-like constructs that maintain law and order. But now his rule is failing, and revolution is sweeping across the Empire's many islands. Lin is the emperor's daughter and spends her days trapped in a palace of locked doors and dark secrets. When her father refuses to recognise her as heir to the throne, she vows to prove her worth by mastering the forbidden art of bone shard magic.

Nineteen-year-old human, Brexley, has grown up in privilege, but not without heartbreak. After being orphaned, she is taken in by General Markos, living in a walled city rife with power grabs and ruthless political games. Then, one night, the course of her life changes, and Brexley is thrown into the most feared prison in the east. Halalhaz, the House of Death - where you go in but don’t come out. She must learn to live with the worst of fae and human criminals.

Touraine is a soldier. Stolen as a child and raised to kill and die for the empire, her only loyalty is to her fellow conscripts. But now, her company has been sent back to her homeland to stop a rebellion, and the ties of blood may be stronger than she thought. Luca needs a turncoat. Someone desperate enough to tiptoe the bayonet's edge between treason and orders. Someone who can sway the rebels toward peace, while Luca focuses on what really matters: getting her uncle off her throne.

Amina al-Sirafi should be content. After a storied and scandalous career as one of the Indian Ocean’s most notorious pirates, she’s survived backstabbing rogues, vengeful merchant princes, several husbands, and one actual demon to retire peacefully with her family to a life of piety, motherhood, and absolutely nothing that hints of the supernatural.

In the first book of a visionary fantasy trilogy with its roots in the mythology of Africa and Arabia that “sings of rebellion, love, and the courage it takes to stand up to tyranny” (Samantha Shannon, author of The Priory of the Orange Tree), three women band together against a cruel empire that divides people by blood.