An oathbreaker paladin. An angel with a dark secret. An unexpected partnership to restore a shattered world.

Centuries ago, a cabal of powerful mages cast a disastrous spell that corrupted the source of magic, transforming much of the world's population into merciless monsters called Riven. Empires crumbled. Civilization collapsed.

Yet an ember of hope remains. Duncan Keene is a Dread Knight, a dark warrior empowered by an unholy pact with a demon lord. He has sacrificed everything to save the world from the Riven—his family, his future, even his very soul. When he finds himself unexpectedly partnered with the last uncorrupted angel in the world, she makes it her mission to redeem him.