Renon Uth Zhakrin is no hero—he’s a self-absorbed businessman and secret historian with a penchant for observing chaos from the shadows. But in the eerie depths of the Lower Plane, where demonic lords battle for power and entire realms are forged from obsidian and decay, even an observer can become a player. When Renon witnesses the fall of a mighty demon lord, he’s drawn into a dangerous web of power, intrigue, and ancient secrets. As the final installment of a series released in reverse, this fourth book marks the end of Renon’s story—a dark, twisted finale that reveals his ultimate fate and unravels the mysteries that shaped his life in the Lower Plane.