Throne of Nightmares: Princes of Sin (Series by Kerri Maniscalco)

The Princes of Sin series by Kerri Maniscalco is a dark fantasy romance saga set in the courts of Hell. Each book focuses on one of the demon princes representing the Seven Deadly Sins. Their stories combine mystery, political intrigue, and intense romance as alliances shift and hidden motives threaten the balance of power between rival courts.

With the release of Throne of Nightmares on February 10, 2026, the saga continues to expand, bringing readers deeper into the world of the demon princes and their rivalries. Readers who enjoy dark fantasy, forbidden romance, and high-stakes power struggles will likely find this romantasy series compelling.

Age Recommendation: Adult Readers (18+)
This fantasy romance series contains mature themes, violence, and explicit romantic content.

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Throne of Nightmares by Kerri Maniscalco

Series Information

Series Name: Princes of Sin
Author: Kerri Maniscalco
Publisher: Little, Brown and Company
Genre: Fantasy, Romance, Dark Fantasy, Romantasy
Years of Publication: 2023–Present
Books Published: 3
Series Status: Ongoing
Audiobook Narrator: Marisa Calin and Shane East

Our Rating of This Series:

Princes of Sin – Order of Reading

Book 1: Throne of the Fallen (2023)

Throne of the Fallen introduces Prince Envy, one of the powerful demon rulers of Hell. When a mysterious artist named Camilla Antonius becomes entangled in his court, the two are drawn into a dangerous game filled with secrets, magic, and deadly rivalries. As Envy tries to help his court, he must decide whether Camilla is an ally, an enemy, or something far more dangerous.

Book 2: Throne of Secrets (2024)

Book 2, Throne of Secrets, shifts the focus to another of the demon princes. This time, the story moves from Prince Envy to the Prince of Gluttony, Gabriel Axton. In Throne of Secrets, the Prince of Gluttony is known for his indulgence in delicious food, women, and the thrill of the hunt. However, when a hunt goes wrong, he begins to suspect that something is not right within his demon court. At the same time, a reporter named Adriana Saint Lucient begins her own investigation, which leads her into Axton’s infamous court. To stop darkness from falling over the kindgom, Axton and Adriana will have to unite against an escalating danger.

Book 3: Throne of Nightmares (2026)

Published on February 10, 2026, Book 3, Throne of Nightmares, shifts the focus to another of the demon princes. This time, the story centers on Prince Sloth, a reclusive ruler who prefers the safety of his enchanted library over the dangers of the outside world. However, when a forgotten deity threatens the very fabric of the Underworld, he is forced into a race against time. He must find the Book of Nightmares, which is an ancient artifact with the power to break worlds, before it unleashes a deadly game to free its master, the Goddess of Night.

After a betrayal leaves him marked and desperate, his path collides with a young woman named Lore Brimstone. Lore is a librarian who has always loved getting lost in a book, but she never meant literally. Yet, after visiting a traveling caravan, she quickly finds herself transported to a terrifying but oddly familiar world, with the worst, twisted prince at her side. Realizing they are living out her favorite novels one by one, they face off against an increasingly dark magic as they try to survive the story.