This volume, authored by , includes several supplementary resources for Game Masters:

The adventure is designed for and focuses on the resurgence of the Cult of the Peacock Spirit. As the fourth installment in a six-part campaign, it serves as a critical bridge where heroes transition from investigating local disturbances to confronting mythic-level threats rooted in the ancient empire of Thassilon. 2. Narrative Background

: Detailed occult rituals once practiced by the Runelords, providing new mechanical options for high-level play.

: Ancient texts reveal that the mysterious Cult of the Peacock Spirit was originally introduced to Golarion by Runelord Xanderghul .