From back cover:
This 128-page book lays bare the secrets of Sammaster and the secret society he created over 400 years ago. Herein is written the story of the Cult of the Dragon, beginning with its foundation based on an obscure line in a tome of ancient prophecy. Learn of the Cult's most powerful current cells, their leaders, the dragons and dracoliches that work with them (or for them), and their goals. Discover the many foes the Cult has earned in over four centuries of treachery and industrious malevolent dealings. Also included are the details of some of the spells and magical items of the Cult and its dragons and dracoliches, including the one item that no Cult member will ever admit the existence of, much less claim to possess.
Read about the many magical variant and hybrid creatures that the Cult uses to exercise its will across the face of Faerûn. And finally, decide the best way to incorporate the Cult into a Forgotten Realms campaign by browsing the numerous adventure hooks for just the right scenario to tempt and terrify players of any gaming style.