Illuminator Witch - The Bonegates Series, #4

A kingdom seized. An ousted king. A looming war. King Oberon is sure to seek revenge on my siblings and me, and he won't confine his fury to Faerie. The human world, my world, is in grave danger too. I can't let that happen, but there are obstacles to overcome first.  The most worrying being that the fae of Lyonesse are enchanted to follow their old king their death. Only a select few believe we have their best interest at heart.
And then there's the matter of King Oberon possessing a dragon. The deck is stacked against me and my allies, but we must get the fae of Lyonesse on our side before my father retaliates. For if we don't, two realms will burn.