At last the stars are almost right. Soon Nyarlathotep's plans will come to fruition. Then the world will be changed irrevocably - but not quite yet. Pesky human investigators have learned much. Now they must survive long enough to make sense of what they know, and take resolute action.This roleplaying classic is a series of linked adventures forming one long and unforgettable campaign. Horrifying deeds and dangerous sorcery dog those who dare attempt to unravel the fate of the Carlyle Expedition. The non-linear narrative keeps players baffled and on their toes. Action is the byword as the player-characters evade or combat cultists, magic, mad men, and the dread powers of the Outer Gods.