City of Stone and Silence (The Wells of Sorcery Trilogy)

After months aboard the legendary ghost ship Soliton, Isoka and the rest of the crew finally arrive at their mysterious destination - a city of great stone ziggurats, enshrouded in a ghostly veil of unwelcoming magic. And they’re not alone. By night, monstrous living corpses wander in search of prey. By day, royalty, monks, and madmen live in a precarious balance. The one thing they all agree on is that escape is impossible, but Isoka refuses to give up. She must capture Soliton and return it to her home city of Kahnzoka, or her sister Tori’s life will be forfeit. But there’s more to Tori’s life back in Kahnzoka than Isoka believes. In secret, Tori helps run a sanctuary for mage-bloods fleeing the Emperor’s iron fist, and her work takes her deep into the mires of intrigue and revolution. But that’s not her only secret - she commands the power of Kindre, the Well of Mind, which can bend others to its will. Though she’s spent her life denying this brutal magic, Tori will use whatever means she has to fight for the people who need her help. . . .