Recipe for Retribution

Publisher's blurb: The plan is in motion, and you must scour the breadth and depth of Icewind Dale for the components an extraplanar stranger needs to create explosive devices powerful enough to bury the ancient Abeiran city of Xorvintroth and seal away the horrors residing within. Are you up to the challenge? Part Nine of the Plague of Ancients Series of Adventures. A Four-Hour Adventure for 5th through 10th-Level Characters Optimized for APL 9.