Nocturne, a wilderness of eternal night.Solis, a wasteland of endless day.It’s been a thousand years since the Avas Vatras tried to burn the world to ashes. A thousand years since they were imprisoned in the arid death zone called the Kiln. But revenge is a dish best served cold—even, apparently, by the children of fire. As war brews again, a young woman named Nazafareen must learn to control her own volatile power to stop...

As the dark forces of the Undead sweep across what remains of the empire, Nazafareen must obey the summons of a demon queen to save Darius's father, Victor. Burdened with a power she doesn't understand and can barely control, Nazafareen embarks on a perilous journey through the shadowlands to the House-Behind-the-Veil. But what awaits her there is worse than she ever imagined . . .A thousand leagues away, Tijah leads a group of children on a desperate mission to rescue the prisoner...