With five shards of the Shattered Star secure, visions point toward one of Varisia's most remote corners as the site protecting the sixth fragment of the powerful artifact. Yet the heroes are not the first to search for this shard -- upon arriving at the ancient ruin known as Guiltspur, they find a small army of giants said to be ruled by a blue dragon already excavating the site. And as the heroes soon learn, there are other forces searching for the final shards from the Darklands below, and even from beyond reality itself, for Guiltspur lies dangerously close to the nightmare realm of Leng

Continuing the Shattered Star Adventure Path, Into the Nightmare Rift is a Pathfinder Roleplaying Game adventure for 13th-level characters that features articles on Lissala, the ancient goddess of runes and fate, a gazetteer of the weird demiplane of Leng, and several new monsters (including Lovecraftian terrors like the nightgaunt) in the Pathfinder Bestiary, while author Bill Ward (Return of the Sword) continues a new novella in the Pathfinder's Journal.