From the Back of the Book:
Condemned by a history of horrors, an army of the living dead stands between Korvosa and its only home for salvation. Within the grim fastness of haunted Scarwall, the lifeless legions of the ancient warlord Kazavon guard the same accursed halls they've stalked for more than 700 years. Crossing a forsaken land to reach the infamous citadel's dreaded gates, the PCs must explore the foul castle's haunted halls, contend with otherworldly terrors, and purge the taint of Kazavon's final days before having any hope of finally breaking the Curse of the Crimson Throne.
This volume of Pathfinder includes:
"Skeletons of Scarwall," an adventure for 12th-level characters, by Greg A. Vaughan.
A terrifying glimpse into the sadistic church of Zon-Kuthon, god of darkness, envy, and pain, by Sean K. Reynolds.
An explanation of the orc-ruled Hold of Belkzen, untamable land of monsters, savagery, and ancient secrets, by James L. Sutter.
Surrounded by savages, Eando Kline discovers the cruelty of orcs stretches far beyond more bloodlust in the Pathfinder's Journal, by James L. Sutter.
Five new monsters by Greg A. Vaughan and Sean K. Reynolds.