Tamsin is driven by an unwavering devotion to her brother, willing to face any danger to break the curse that binds him. This highlights the complex relationship siblings have, built on love, responsibility, and sometimes, resentment. Tamsin's journey explores how far we go for family and the sacrifices we make in their name.

The legendary ring, imbued with immense power, acts as a magnet for ambition and treachery. Tamsin encounters other Hollowers, each with their own desires and motivations, willing to kill for a chance to possess it. This theme explores the intoxicating allure of power and the darkness it can breed, even in the hearts of those who seem noble.

Forced to collaborate with her rival, Emrys, Tamsin grapples with suspicion and the necessity of trust in a world where betrayal lurks around every corner. This theme explores the complexities of relationships forged in the crucible of shared danger and the challenges of overcoming past animosity for a greater purpose.