The Year of Blue Fire: An Alternate History
Zhentil Keep, the infamous fortress of the Moonsea, and home to the ruthless Zhentarim has been destroyed by the armies of the merchant city of Phlan. Phlan, after hearing of the plague of undeath that befell the nearby city of Melvaunt, declared the Zhents to be behind the magical plague. Rallying a mysteriously large army, they marched on the old stronghold and leveled it. The remaining Zhents are now in hiding, much to the joy of their rivals.