Battle to Be King (A King's Tale #3)
Leilani Love

Arthur's Uncle will stop at nothing to keep Camelot under his thumb. Killing his nephew should be easy; after all, he already killed his brother.
Arthur and Guinevere will have to get help from whomever they can in order to take down the demon army that fights alongside his Uncle. With Merlin by their side and the help of the people, Arthur will do anything he can to protect those he loves and free his people.