When a trove of fireworks falls into the hands of the goblins of Brinestump Marsh, the people of Sandpoint fear an explosive invasion. But there’s more afoot in the soggy wilderness than goblin hijinks and dangerous pyrotechnics. An investigation reveals mysteries and menaces aplenty, but also a treasure holding the answer to not just one of Varisia’s greatest mysteries, but a conspiracy spanning continents and empires. Can the adventurers piece together a puzzle that links the owner of a sleepy village tavern to the unsolved destruction of a fortress-settlement? And can they withstand the ancient forces and secret destiny that have waited for them for decades?