A vanished tome, a faded legend, and the end of the world. Out of the eons, the deadliest artifact. At least one magic-user is required, and fighters and thieves would be very helpful. Magic-users may have a special interest in this quest due to the nature of the item for which they search. Traps and puzzles are a dominant theme, and problem solving is necessary. Pgs. 41-64

A combination wilderness/dungeon module, first searching for then exploring the temple of Tharizdun. Tharizdun is long gone from the place, so there's no epic final fight. Rather, a mysterious Black Cyst waits at the bottom of the dungeon. The encounter with it is almost scripted, having no hazard except for careless/foolish players. Contains several monsters from the Fiend Folio. Loosely follows Lost Caverns of Tsojcanth. TSR 9065