Before she ever wore a uniform at Brightwell Academy, Kit Featheringale learned how to protect her younger sister.

Now the youngest Head of the Guard in the history of the House of Watch, she finally has the authority to match her instinct. But when a student vanishes and tensions ignite in the Fae Realm, Kit and her squadron are sent across the border to the mysterious Darkwell Academy.

What was meant to be a rescue feels like a dark occupation. As ancient artefacts disappear and the rights of the Underkin are stripped away, Kit begins to question the rigid oaths she swore to follow. Because in a world of forbidden magic and shifting power, protecting people and obeying commands are no longer the same thing.

Sometimes the bravest act isn't standing in line - it's stepping out of it.