Not A Ghost by Auryn Hadley

From enemies to lovers, their only hope is to work together. But will this unexpected union cause more problems than it solves?
Running to Iowa in search of a safe place, Dahlia is supposed to be focused on building an army. Instead, she’s grieving. It’s hard to worry about battle plans when the love of her life is gone. But with the help of one old friend and one new one, things are happening. Eidolon are gathering for the first time in history, but how many predators can one city handle?
Thane fears that the Church of the Holy Inquistion is closing in on him. He needs an escape plan, but he refuses to leave his brother. His best bet is the mysterious woman who should’ve been his enemy. With a bold plan, he chases after her, not knowing if the price will be his life.
They’re both desperate. They can’t do this on their own, but together, they might have a chance. Taking a desperate leap, they form an unlikely alliance – yet the mob of Eidolon can’t be controlled.
Can a hunter and an eidolon find love together, or will their separate worlds cause their mutual destruction?