Return to New York Times bestselling author Nalini Singh's darkly passionate Guild Hunter world, where human-turned-angel Elena Deveraux, consort to Archangel Raphael, faces a new challenge that threatens the balance of the world.

Wings of silver. Wings of blue. Mortal heart. Broken dreams. Shatter. Shatter. Shatter. A sundering. A grave. I see the end. I see...

The world is in chaos as the power surge of the Cascade rises to a devastating crescendo. In furiously resisting its attempts to turn Elena into a vessel for Raphael's power, Elena and her archangel are irrevocably changed...far beyond the prophecy of a cursed Ancient.

At the same time, violent and eerie events around the world threaten to wipe out entire populations. And in the Archangel Lijuan's former territory, an unnatural fog weaves through the land, leaving only a bone-chilling silence in its wake. Soon it becomes clear that even the archangels are not immune to this deadly evil. This time, even the combined power of the Cadre may not be enough...

This war could end them all.