The Shadowcallers of Nidal are some of the most feared spellcasters on Golarion, known for their remorseless cruelty and ruthlessness. When the newly minted Shadowcaller Isiem agrees to accompany his estranged friend Ascaros on a journey to investiage his aunt's death and reclaim her possessions, he finds himself face to face with a powerful artifact of great interested to the pairs' academy, the infamous Dusk Hall of Pangolais. Face with age-old curses, betrayal from within Zon-Kuthon's dread ranks, and worse, Isiem may soon regret trading the known dangers of the Dusk Hall for the unknowns of Nisroch. From acclaimed author Liane Merciel comes a dark tale of loss and treachery set in the award-winning world of the Pathfinder campaign setting.