Cast in Atonement by Michelle Sagara

In the City of Elantra, only one holds the key to peace—or eternal darkness.

At the end of three long wars, Bellusdeo is the last of her kind, the sole surviving female Dragon in the City of Elantra. When she appears one evening on the doorstep of her former roommate, Corporal Kaylin Neya, her demeanor is dreadful—more so than what’s expected of the Dragons’ notoriously tempestuous temperament. Kaylin’s new roommate, Mrs. Erickson, is quick to see the reason for Bellusdeo’s despair—the eight ghosts of the Dragon’s dead sisters, chained to her and unseen. Pleading for release, revenge and, above all, peace.
Now Kaylin and Mrs. Erickson must embark on a perilous journey, from the hallowed halls of the Academia to the depths of forbidden magic, to confront the very essence of mortality itself. Can Kaylin help release the untapped power within Mrs. Erickson to save Bellusdeo’s sisters…or will unlocking the past plunge the realm into an unfathomable darkness forever?