Truth’s Blade by Michelle Diener

A warrior enslaved . . .
Theo has been bested. On the hunt for missing children, he encounters a man who has more magical weapons than Theo could ever believe existed. And their confrontation may have ended with Theo managing to wound the abductor, but it leaves him spelled in the shape of a goat.
A woman trapped . . .
Melodie has been living a half-life in Iloa—exploited by her boss, restless at the thought of continuing on her current path, she stumbles into a situation she knows will change her life. When her ability to see spell work, which has led to a life in the shadows, allows her to see a man caged by magic, she has no hesitation in releasing him.
A partnership made in desperation . . .
When Theo asks her to help him find missing children, to go up against a spell worker who sounds like everything her deceased father tried to protect her from, Melodie accepts. She is tired of keeping herself safe at the expense of the truth, and Theo swears he will be the blade at her back.
But neither of them know the danger they will be facing, and how deep a bond they will have to forge with each other to fight an opponent with a heart this dark.