The critically acclaimed fantasy series continues with “impeccable storytelling. . . . reminiscent of the works of Terry Goodkind and Jacqueline Carey.” —Library Journal

Within the confines of Mélusine lies the Mirador, the city’s citadel of power and magic. A stronghold where Felix Harrowgate has found his place once more, his sorcery and his sanity restored. But even a wizard at the height of his powers knows well to watch his back.

Which is why Mildmay Foxe won’t let Felix out of his sight. The ex-assassin and former cat burglar is Felix’s half-brother, a man deeply tied to him by blood and magic. But Mildmay gets caught up in a dangerous attraction to Mehitabel Parr, professional actress and unwilling spy for the Bastion. A rival stronghold of wizards, the Bastion knows Felix is the key to destroying the Mirador. But if the Bastion dares to take on Felix, they will need to take on Mildmay, too—the brother willing to fight to the death to keep Felix—and Mélusine —safe.

“Virtuoso narratives of theatrical, political and magical intrigues.” —Publishers Weekly

Book three in award-winning author Katherine Addison’s captivating series, The Doctrine of Labyrinths

Originally published under the name Sarah Monette.