The Darkest Tide - (Ys Trilogy Book 1)

In a drowned world ruled by fishmen, every secret is deadly. Una One-Eye sees with the eye that isn't there-a truth her mother dares not speak. Fiachra, a thrall with hidden depths, glimpses the sapphire fire in her empty orbit. Somewhere, power sleeps-enough to shatter tyranny and awaken Ys. But the eye knows, and it keeps its secret.