Oathborne Books in Order

Oathborne is a secret-school fantasy built around Kaela Reign, a street urchin who receives an invitation into a hidden institution called Stonegarden. There, recruits are trained in espionage, survival, and ancient magic so they can become Oathborne agents, people sworn to protect the realms through a mix of skill, secrecy, and power.

That blend is what gives the series its flavor.

This is not only a magic-school story. It is also a training-to-be-useful story. Stonegarden is meant to shape operatives, not simply students. That means the books lean into missions, observation, trust, deception, and the idea that the right knowledge can be just as dangerous as raw magic.

Kaela is a good lead for that world because she starts with street instincts rather than status. She knows how to watch, adapt, and survive. The school gives her tools, but it also pushes her into rivalries, emotional complications, and moral choices that are harder than the physical tests.

The year-by-year structure is helpful too. It lets the series grow with Kaela. Each phase feels like another level of training, another widening of the world, and another reminder that belonging to a powerful order comes with real cost.

If you like hidden schools, ancient magic, secret societies, and heroines who have to learn both power and restraint, Oathborne sits neatly in that dark-academy-adjacent space without losing Rice's usual pace.