Children of the Pact - A Tide of Sacred Ice, #3

Warrior and prince Zabroc Khanor always seemed destined for greatness, but when the king's throne is left suddenly empty, he finds himself caught between his father's legacy and the traditions of his people. The Ûzuks have sworn vengeance on the Dacurean Twelfth legion, who've seized the southern city of Darrun. Yet beneath its streets, secrets are beginning to stir, a madness that threatens to consume the legion and the city from within.
On the cusp of an Ûzuk siege, two druids of Aladria arrive in Darrun, searching for a crucial artefact, but instead uncover a conspiracy against the very nature of their world. A Hidden Hand guides the chaos in Darrun, a long-dead king seeks revenge against the gods, and an abandoned people are awakening to feast.