Her Hidden Fire is one of those books that caught me off guard in the best way. I went in expecting a familiar romantasy setup with magic, danger and a touch of longing, but what I found was a story that felt both recognisable and strangely new. It took me a little while to settle into the world, especially in the opening chapters where the structure of Domhain and its magic system is introduced, but once the story found its rhythm, I was completely absorbed.
The book follows Éadha, an orphan raised in the household of her childhood friend Ionáin. Their society is built on a strict magical hierarchy. At seventeen, every young person faces the Reckoning, a ceremony that determines whether they are a Channeler or a Keeper. Channelers wield magic, while Keepers supply the energy that allows that magic to exist. A week before the ceremony, Éadha discovers she has powers of her own, something she should not have as a girl outside the great Families. When Ionáin faces the very real possibility of failing his test, Éadha makes a choice that changes both their lives. She secretly sends her magic to him so he can pass, then disguises herself as a Keeper so she can follow him into training.
What begins as a single act of loyalty spirals into a dangerous web of secrets. The academy setting introduces new characters, shifting alliances and a growing sense that the magic system is far darker than anyone wants to admit. The more Éadha learns, the more she realises that the entire structure of Domhain is built on something deeply unsettling.
The themes are ambitious. Power, class, exploitation and the cost of loyalty all sit at the heart of the story. I appreciated how the book explores privilege from multiple angles, especially through the contrast between Éadha’s vulnerability and the entitlement of those who have always expected power to be theirs. There is also a strong emotional thread running through the book, although at times I wished for a little more variety in the emotional landscape, particularly in the relationships that surround Éadha.
What worked best for me was the magic system. It is clever, twisted and surprisingly dark. The more I understood how it functioned, the more I felt the weight of its consequences. I also loved the dynamic between Éadha and Gry, which felt far more compelling than the love triangle that occasionally slowed the story down.
Readers who enjoy character driven romantasy with political tension, layered world building and a heroine who grows into her strength will find a lot to love here. It is not a perfect book, but it is an engaging one, and the final chapters left me eager to see where Éadha’s journey leads next.
In the end, Her Hidden Fire delivers a strong start to a trilogy with plenty of promise. It is vivid, thoughtful and full of potential, and I will definitely be picking up the sequel.
I read this as part of the Penguin YA readalong with some of my favourite bookstagrammers, and sharing reactions in real time definitely added to the excitement.

