At the Threshold of the Universe: The Song of Kamaria, Book 3 (Unabridged‪)‬

All songs end.

War ravages Kamaria as an old enemy resurfaces from the depths of the ocean. Offering no support in the coming battles, the Auk’nai isolate themselves in their tightly guarded Nest. Outgunned and outmatched, humanity once again trembles on the edge of obliteration. 

The Castus family is torn apart. Denton fights on the front lines, hoping to free Cade from a nightmarish foe. Meanwhile, Eliana and Nella set out on a path that will change everything they understand about the Sirens. The Song will end, but who will remain to hear its final verse?