Book cover for The Demon King by Peter V. Brett

The Demon King

2026 Released
480 Pages
10-11 Hours
Audiobook Unavailable
Paperback Available January 5, 2027
Del ReyISBN 9781984817150

The third and final book in The Nightfall Saga, the thrilling and action-packed epic fantasy series set in the world of The Demon Cycle, from New York Times bestselling author Peter V. Brett

“Heart-wrenching, smart, and modern . . . The Desert Prince has set a new standard for fantasy.”—Wesley Chu, author of The War Arts Saga


He is known as The Prince of Lies. The Father of Demons. He is Alagai Ka, the Demon King.

Though humanity won a hard-fought victory in its war against demonkind, the Demon King has escaped in search of a new queen to restart his dark hive, and has found signs of one on a distant shore.

But pursuing him are humanity's best hopes: Olive Paper and Darin Bales, whose legendary parents brought demonkind low once before. Olive and Darin will not rest until the demons are defeated, and so relentless is their hunt that they have followed Alagai Ka across the sea to a strange new land.

There they discover a culture unlike any they have never known, where demons live alongside humans as servants and companions. And there they meet the demon's masters--including a seductive prince who is drawn to Olive--who seem unable or unwilling to understand the danger they are in.

Because no human is safe from the Demon King's thirst for war--and every human must join the battle against his kingdom of death.

Book Three of The Nightfall Saga

Don’t miss any of Peter V. Brett's riveting Nightfall Saga:
THE DESERT PRINCE• THE HIDDEN QUEEN • THE DEMON KING

Peter V. Brett

Peter V. Brett is the international bestselling author of THE PAINTED MAN and THE DESERT SPEAR. Raised on a steady diet of fantasy novels, comic books and Dungeons & Dragons, Brett has been writing fantasy stories for as long as he can remember. He received a Bachelor of Arts degree in English literature and art history from the University at Buffalo in 1995, and then spent more than a decade in pharmaceutical publishing before returning to his bliss. He lives in New York City.

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