The Stolen Souls. The Elemental Saga, #4

She got her revenge. It wasn't the end. Moira has two things left to live for: getting Nerida back, and making the Mage Supreme pay for what he's done. But revenge is never simple-and when she finally has Ei at her mercy, the answers he offers are worse than the questions she came with. Because the enemy she thought she knew may not be the one she should fear most. As dark forces gather and the dead begin to stir, Moira and her companions must reckon with power they never asked for, truths that unravel everything they believed, and the terrible cost of a war that has been centuries in the making.
Some souls cannot be saved. Others were never meant to be.  Do you love sweeping sapphic fantasy with love that's been earned across four books, a found family that keeps choosing each other, and a villain who's been winning for a thousand years? This is the final book in the The Elemental Saga series.