From the back cover:
More than just powerful wizards, divine temples, and wise kings comprise the Realms. For every beacon of light there exists a shadow, and shadows conceal much. Those who work in secret wield much power in Faerûn: Groups as diverse as the Harpers and the Zhentarim all live and work in the shadows of the Realms.
Here, for the first time, is detailed information on these groups' areas of influence, leaders, chains of command, methods, agents, and their recent activities and plots. Read about:
The schism that tears apart the Harpers
The bizarre details of the "Manshoon Wars"
The rise of Fzoul Chembryl, grand tyrant of Xvim the Baneson
This book also gives information on the Night Masks, the Knights of the Shield, the Iron Throne, the Shadow Thieves, and many more secret societies. Finally, Westgate—the nexus of many power groups' interests on the Sea of Fallen Stars—is detailed as never before.
Learn what goes on in the shadows of the Realms; learn the secrets they don't want you to know!