Catching Stars - Cayla Keenan

Jayin Ijaad is in hiding. A witch with powerful abilities, she carves out a life for herself in the slums of Pavaal, a city rotting from the inside out. When an old acquaintance tracks her down, Jayin is dragged back into a world she tried to escape -- and is determined to escape again.
Maddix Kell is on the run. After two years in prison for crimes he did not commit, Maddix escapes and seeks out a legendary order of witchhunters who are his only chance to find justice.
But all is not as it seems and Maddix soon finds himself on the run from the people he sought as allies. When their paths collide, Jayin and Maddix must put aside their prejudices and forge an uneasy alliance that could crumble at any moment. But if they want to survive in Aestos -- a brutal kingdom where magic and corruption lie hand in hand and enemies lurk around every corner -- they must first survive each other.