From the back of the book:
A malignant cult has taken root in the mystical and magical realm of Jalmeray. Known and feared throughout distant Vudra, the cult of Dhalavei has expertly destroyed organizations and societies from within for millennia. Now a new sect of the sinister Cult of the Ebon Destroyers has its sights set on Thakur Kharswan of Jalmeray, and the magistrates and bureaucrats behind the throne must hunt down and eliminate the cult before the unthinkable happens. If only there were someone they could trust to behead Dhalavei's cult before the assassins do the same to their beloved ruler…
Cult of the Ebon Destroyers is an adventure for 8th-level characters, written for the Pathfinder Roleplaying Game and compatible with the 3.5 edition of the world’s oldest RPG. In addition to the adventure, this volume also features a brand-new monster and a gazetteer of the city of Niswan, capital of the Isle of Jalmeray.
This module is the result of Paizo Publishing's RPG Superstar contest, which allows unpublished authors to compete before a panel of celebrity game designers and legions of their peers for the chance to write a Pathfinder module.