Ruling uncontested in his Abyssal layer of the Gaping Maw for eons, Demogorgon's reign as first among demon lords may be coming to an end. The storm clouds gather as his inviolate sanctum is about to be breached by an unlikely alliance from across the planes. Despite its combined strength, this invasion offers no guarantees of success. For the alliance faces no house of straw, but rather the entrenched hordes and reinforced ramparts of the home of the Prince of Demons. "Prince of Demons" is the final chapter in the Savage Tide Adventure Path, a complete campaign consisting of 12 adventures appearing in Dungeon magazine. For additional aid in running this campaign, check out Dragon magazine's monthly "Savage Tidings" articles, a series that helps players and DMs prepare for and expand upon the campaign. The time has come to challenge the Prince of Demons! An army of demons and eladrins stands ready to mount an assault on his Abyssal realm of Gaping Maw, which should give your players the distraction they need to prevent Demogorgon from activating the savage tide and driving a world insane. Pgs. 60-99