When we last left our heroes, they were preparing to descend into Khyber to following the trail of clues left by the cultists who’d been terrorizing Blackroot. During their preparations, two people from the village caught up with them in the caves, a tiefling wizard named Seraphina and a half-elf sorcerer named Mercutio. They asked to be allowed to accompany the group into the depths. Since Wizar the Wizarian and The Hand of Wisdom seemed to have disappeared altogether, the group readily agreed. Fortunately, the pack in which Wizar was keeping the weird tentacle things they pried off the dead cultists was left behind.
Descending into Khyber, the first cavern they discovered contained four dolgrims along with a strange pool of a viscous purple liquid. They defeated the horrid-looking fused goblin things and upon discovered the restorative power of the purple liquid, dumped some of their water for the liquid. They proceeded into the depths and discovered another cavern with a large area of impenetrable darkness. When they approached, the darkness lashed out at them*. Beyond the cavern containing the Living Darkness, they were forced to cross a cavern floor consisting of hundreds of chomping mouths, though they were small enough to cause no damage; they just looked creepy. Finally (after the DM—me, skipped a few encounters due to time constraints), they encountered a purpose-built room containing many large crystal shells inside which they could see various villagers including Doria Veledaar. A machine of some sort appeared to be draining and devouring the soul energy from the prisoners within the crystal shells.
Putting their heads together, the PCs deduced a variety of ways to break open the shells and defeat the machine to free the villagers. They recovered the Coat of Eyes and the grateful villagers gave them a pair of magical boots; heirlooms of one of the families who were not lucky enough to survive the cultists. Mercutio and Seraphina elected to remain with the group and they all resumed their trek toward Sharn to return the Coat of Eyes to Master Yorel.