Secrets of Sarlona explores the continent of Sarlona for the first time. It gives players and Dungeon Masters their first real glimpse inside the empire of Riedra, home of the Inspired and the kalashtar. It also explores the mysteries of Adar, a nation isolated from the rest of the world, and never-before seen locations. Secrets of Sarlona also presents new options (feats, prestige classes, spells, and magic items) available to Sarlonan characters and characters with psionics.