Deep in the forest, something is stirring. An evil fey sorcerer, cast out of the First World millennia ago by her own kin, has found a way to break through the ancient walls of her prison, and carries with her a vengeance too deep to be sated. For the quiet Andoren town of Bellis, busy celebrating a long-awaited marriage, it's a time for joy and laughter. Yet the forest that's always sheltered it is growing dark, and things are moving in the heart of the woods...

When Pathfinder Colm Safan entered the Nethys-linked heart of the fabled dungeon known as the Ravenous Sphinx, the Pathfinder Society expected to solve one of Osirion's greatest riddles. Months passed with no word from Safan, and you and your fellow Pathfinders find yourselves dispatched into the desolate wastes of Osirion's notorious Parched Dunes to find the sphinx, find Safan, and uncover the mystery he sought. With a band of cloaked riders on your trail and a trap-filled dungeon ahead, will you solve the third riddle before time runs out?

Impossible Experiments is a series of adventures, each spanning 1-2 levels. Each volume can be run individually or combined into an ongoing series. This volume establishes the premise of this series… When the wizard-king Nex retreated into his Refuge over 4,000 years ago, speculation ran rampant as to what he would do in this space. At first, many assumed that he was restrategizing for the war with Geb, but as the decades and centuries ground on, wilder hypotheses were offered. One explanation claimed that Nex was experimenting to develop a new generation of magical warriors, spies, and minions whose presence would overwhelmingly tip the scales of war against Geb, and likely other nations to follow. In recent years, the gates to the Refuge of Nex have opened, and strange creatures have emerged. Indeed, these creatures are prototypes that Nex is evaluating. Near the iruxi-founded town of Gitna, one of Nex’s first prototypes has emerged and begun to claim victims. The guard has been raised in Gitna, and the heroes are now called to fulfill their oath to defend the town by helping one of its behir guardians, recently injured in his own fight... This adventure includes two archetypes, a versatile heritage, backgrounds, and items you can offer to your players to make this adventure your own!

Part 2 of the "The Devil We Know" campaign arc. Cassomir's Locker is a Pathfinder Society Scenario designed for 1st to 7th level characters (Tiers: 1–2, 3–4, and 6–7). The Pathfinder Society dispatches you to the catacombs called Cassomir's Locker to find the source of a rat cult breeding monstrous vermin. After clearing Cassomir's dank sewers and delving into the dirty dungeons below, will you find the artifact that powers Cassomir's Locker or bring about the destruction of Taldor's most important port?

When Harrowstone Prison burned to the ground, prisoners, guards, and a host of vicious madmen met a terrifying end. In the years since, the nearby town of Ravengro has shunned the fire-scarred ruins, telling tales of unquiet spirits that wander abandoned cellblocks. But when a mysterious evil disturbs Harrowstone’s tenuous spiritual balance, a ghostly prison riot commences that threatens to consume the nearby village in madness and flames. Can the adventurers discover the secrets of Harrowstone and quell a rebellion of the dead? Or will they be the spirit-prison’s next inmates?

When Pathfinder alchemist Andrax d'Aponte contracted a mysterious wasting sickness, he set his mind to feverishly researching the disease and its cures. With the rare skeleton moon hanging in the sky above Absalom, the Decemvirate sends you to an ancient siege castle outside the city to recover d'Aponte's research notes and inquire about his involvement in recent Pathfinder deaths in Osirion. What you find, however, is a man changed by madness and paralyzed by paranoia and fear. Will you survive the night of the skeleton moon?

Trouble in Paradise The Ruins of Azlant Adventure Path begins with the adventurers standing on the deck of a ship ready to make landfall at their new home. However, dread settles in as they notice that the colony is empty and abandoned. Tasked with uncovering the whereabouts of the prior group of colonists, the adventurers go ashore and explore the deserted settlement. Uncovering strange evidence leads the adventurers across the island, where they encounter two survivors who can give them clues as to the fate of the rest of the first wave of settlers. Can the adventurers survive long enough to discover what truly befell the fledgling colony?

Cheliax's largest city, Westcrown, has fallen to the Glorious Reclamation, and the evil adventurers are sent to reclaim the metropolis in the name of House Thrune. Armed with the legendary weapon they created from a gold dragon's head, the nefarious characters confront the Glorious Reclamation's forces and break its siege of a nearby Hellknight citadel. Once the army is defeated, the villains enter Westcrown, where they must undermine the chivalrous knights' rule of the city. Finally, they face the founder and Lord Marshal of the Glorious Reclamation to end the rebellion and restore the Thrice-Damned House of Thrune's rule over the empire of Cheliax.

When devils slay the knightly leader of Arwyll Stead and orcs from the Hell's Fury tribe attack the town, all hope seems lost for the brave people living on Lastwall's border. The coincidental arrival of the mysterious half-orc Vegazi also raises unsettling questions, and it's up to the heroes to make sense of these events and end the Hell's Fury tribe's threat to Arwyll Stead once and for all. What does Vegazi have to do with the raiders' diabolical plot? Who will rally Arwyll Stead now that the town's icon has been cut down? And who is the mastermind orchestrating the orc tribe's alliance with devils from beyond?

Book 4 in the Iron Gods campaign: A great threat is rising in Silver Mount, but a precious item belonging to a mysterious entity called Casandalee has yet to be found. With the Dominion of the Black still an ever-present danger, players must navigate a dangerous canyon, the Scar of the Spider, in hopes of learning more about their enemies, and to accomplish their mission.

After an Andoren village is razed by the Hydra's Fang, a renegade Chelish slaver-ship, outrage threatens the stability of both nations. You and your fellow Pathfinders are sent to capture the Fang before the Inner Sea is pitched into political frenzy.

The city of Westcrown is dying. Since being stripped of its station as the capital of Cheliax, the wealth and prestige of the city has gradually slipped away, leaving the desperate people to fend for themselves in a city beset by criminals, a corrupt nobility, and a shadowy curse. Can the PCs fight back against champions of both the law and the criminal world? This volume of Pathfinder Adventure Path launches the Council of Thieves Adventure Path, and includes: - "The Bastards of Erebus," a Pathfinder RPG adventure for 1st-level characters, by Sean K Reynolds - A gazetteer of Westcrown, the shadow-haunted City of Twilight, by Steven Schend - An investigation into the lives of tieflings, along with hundreds of fiendish variations, by Amber Scott - A deadly mystery of nobility and intrigue for Pathfinder Varian Jeggare and his tiefling bodyguard Radovan in a new series of the Pathfinder's Jounal, by Dave Gross - Six terrifying new monsters by Mike Ferguson, Sean K Reynolds, and F. Wesley Schneider

Part 4 of the Carrion Crown Adventure Path brings the heroes to the small fishing village of Illmarsh. The party is searching for a dark rider of the necromantic Whispering Way cult and will discover the strange practices of the deeply religious inhabitants of Illmarsh. Rumors of madness, strange disappearances and human sacrifices to things best left unnamed lead them to investigate the town church and its history. They'll find a desperate people, caught in a war between beings from beneath the seas and invaders from the darkest corners of the cosmos. Can the heroes save Illmarsh from its tradition of terror? It is worth noting that this story is heavily inspired by The Shadow over Innsmouth by H.P. Lovecraft and the role playing game Call of Cthulhu. If you're planning on going through the whole adventure path of Carrion Crown, the module Carrion Hill could easily be fit between book 3 and 4, as the party will travel directly through the area where this one shot adventure takes place. This book includes: - “Wake of the Watcher,” a Pathfinder RPG adventure for 9th-level characters, by Greg A. Vaughan - Blasphemous secrets of the foul faiths known collectively as the Old Cults and sanity-shattering gods such as Azathoth, Nyarlathotep, and Cthulhu, by James Jacobs - A giant bestiary filled with eight classic monsters inspired by the writing of H. P. Lovecraft and the tales of the Cthulhu Mythos, by James Jacobs and Greg A. Vaughan - Laurel Cylphra’s discovery that the dead aren’t the only dangers in Ardis in a new entry into the Pathfinder’s Journal, by F. Wesley Schneider.

Now bound to Queen Abrogail by infernal contracts, the villainous adventurers are tasked with destroying the Glorious Reclamation's headquarters in the former citadel of the Hellknight Order of the Godclaw, where they face a gold dragon ally of Iomedae herself! Only if they can survive the terrible onslaught of this fearsome foe and secure the citadel from the revolutionaries can the vile characters succeed at their quest—to perform an evil ritual, using the dragon's head to craft a legendary weapon capable of defeating the Glorious Reclamation's army of valorous knights once and for all.

The crown of the kobold king will be anointed in blood. Five children from the town of Falcon’s Hollow have gone missing, dragged off into ruins underneath a cursed dwarven monastery. Soon they will be sacrificed to the crown, all to the glory of the twisted King of the Kobolds. If they are to be saved from this gruesome fate, brave heroes must follow their trail to the monastery and plumb the depths of its trap-laden and monster-infested halls.

For years, the knights of Mendev have held back the evil locked inside the Worldwound, a vast, demon-tainted landscape. Every few years, they anoint a new protector, a sacred guardian charged with pitting his will against the teeming hordes bent on devouring the very souls of the living. This year, something has gone horribly wrong, and now a bloodthirsty demonic army has overrun the ancient fortress, and threatens to pour into the surrounding countryside.

The Thrice-Damned House of Thrune wants to seal the Inferno Gate, an uncontrolled portal to Hell, and the villainous adventurers are called to accomplish the task. To acquire the components and perform the ritual, they must first face down a hellspawn thieves' guild, the Hellknight Order of the Pike, and the knights of the Glorious Reclamation and their celestial allies. But before they can complete the ritual, the characters may be forced to examine their options—is closing the gate the best plan for the future? Will the villains obey their orders to close the gate to Hell—or might they make a deal with a devil for control of the portal? Or will they only become the latest in a long line of sacrifices to the Inferno Gate?

A mad plot to unleash the greatest necromancer the world has ever known draws to its sinister end. As the murderous cultists of the Whispering Way retreat to their profane sanctuary, the powers of death align to resurrect their fallen champion. Bold adventurers pursue these villains, but can their bravery survive the haunted wasteland of Virlych, the accursed cathedral of Renchurch, and ultimately the towering crypt of Gallowspire? And will their boldness be enough to stop the Whispering Tyrant, the infamous lich-king locked away beneath Ustalav’s deadliest ruin, from being reborn upon a defenseless world? The heroes must test their courage against the servants of death itself in this, the climactic final chapter of the Carrion Crown Adventure Path. This volume of Pathfinder Adventure Path includes: “Shadows of Gallowspire,” a Pathfinder RPG adventure for 13th-level characters, by Brandon Hodge Nefarious plots and macabre menaces to prolong the terrors of your Carrion Crown campaign, by F. Wesley Schneider An investigation into the most infamous liches plotting dooms across the Inner Sea region, by Adam Daigle Laurel Cylphra’s attempt to save a soul in the Pathfinder’s Journal, by F. Wesley Schneider Five new monsters by Adam Daigle, Crystal Frasier, and F. Wesley Schneider

Arcanamirium transmuter Maren Fuln found a magically sealed amulet in the school's library and kept it as a shiny bauble. Little did he know the amulet contained an entity far worse than he imagined, and by unsealing it, he loosed a revenge-obsessed horror into the sewers beneath the school. Can the Pathfinder Society halt the beast’s plan in time, or will he build his army of revenge and sow chaos in Absalom?

Volunteers are needed to escort the body of a deceased venture-captain across the parched Qadiran desert to Katheer. The Silken Caravan offers passage, hauling exotic treasures across the perilous sea of sands. You'll brave bandits, spies, and unwelcome mourners hell-bent on paying respects to your dead companion. Worse still, the caravan's mistress, a satin-swathed Qadiran princess, has designs of her own on you and your cargo.