From publisher blurb:
Few safe havens exist on Athas, and fewer still for preservers. In the hidden places of the cities - a potter's shop, a crematoria, even under the very palace of a sorcerer king - the Veiled Alliance abides, aiding and protecting preservers and auxiliaries, and standing against defilers. In Tyr, Balic, Draj, Gulg, Nibenay, Raam, and Urik, protection from the dark forces of Athas endures.
Secret recognition signals preserve their identities. For those seeking membership comes a testing: after true intentions are proven, tests are administered and, if failed, lead to a terrible death. If successful, the candidate looks forward to years of perilous work and strife - the results of which may never see the pages of a journal. And no one quits the Alliance without facing requital.
Veiled Alliance presents the DM with all the information required to create Alliance - centered campaigns on Athas - detailed information about the five aims, adventure hooks for each Alliance, recognition signals, and maps of various headquarters. All the features you need to create thrilling, fundamental challenges to the Alliance on the ruthless world of Athas are now revealed.