Fiends of Tethyr

From the introduction: [The characters notice] a written sign posted in the town square. It reads as follows: "Notice! Brave adventurers are needed in the city of Velen. Foul Tanar'ri from the Abyss are threatening the safety of our citizens and must be hunted down and destroyed. Report to the council hall of Velen for instructions. Substantial reward offered." User summary: For 6th - 8th level characters. Distributed as an ASCII adventure and two JPG files (maps).