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 5 of the Carrion Crown Adventure Path takes place in Ustalav's capital Caliphas. The heroes are in the city to follow the trail of evidence left by the neromantic cult The Whispering Way and strengthen their bonds with the mysterious Order of the Palantine Eye. Whilst in the city, they uncover a string of murders. When they discover that all the victims were vampires, they descend into the underground vampire city and have the possibility to form a tentative alliance with the vampire clans. If they help solve the murders, the vampire lord promises to help them on their quest. What role do the deadly necromancers have in the undead murders plaguing Caliphas? What secret grudge exists between the cult and the rulers of the night? And will the heroes be able to save the capital without sacrificing their very souls? This book includes: - “Ashes at Dawn,” a Pathfinder RPG adventure for 11th-level characters, by Neil Spicer - A gazetteer of fog-haunted Caliphas, the mysterious and deadly capital of Ustalav, by F. Wesley Schneider - A terrifying look into the blasphemous church of Urgathoa, goddess of gluttony, disease, and the undead, by Sean K Reynolds - Laurel Cylphra’s attempt to steal a soul stealer in the Pathfinder’s Journal, by F. Wesley Schneider - Six new monsters by Crystal Frasier, Patrick Renie, and Sean K Reynolds

Founded by a famous dragonslayer, the small town of Belhaim has become a sleepy rural community just off the beaten path, a settlement where everyone knows everyone and strangers are the talk of the town. But when Belhaim’s peace and quiet is shattered by the sudden collapse of the last standing tower of its founder’s castle, things quickly bloom out of control. Why were there bodies of kobolds amid the rubble? What’s the sinister secret behind the strange sounds of flapping wings in the night? And what’s happened to local wizard Balthus Hunclay, who’s not answering knocks on his door? The collapsed tower had long been an eyesore to the cantankerous old man—could he have had something to do with its destruction? And what of the rumors of strange stirrings in nearby Dragonfen? Has Belhaim’s ancient draconic nemesis returned?

A killer has come to Oakbridge, and she won't stop her murderous campaign until she exacts revenge against a group of ex-carnies who have come to Sharn in an attempt to start new lives in the aftermath of the Last War. Pgs. 22-36

From a ruined theater in the run-down Puddles district of Absalom, a goblin hero and self-styled king rules over the nearby goblins. Shifting foundations beneath the playhouse have revealed ruins from Absalom's early history, and the goblin king has put out a call for explorers to search the area and clear out its dangers. The Pathfinder Society has answered the call. They aren't the only group that is interested, however, and they must prove themselves to earn the right to enter these lost chambers.

Seven Deadly Dungeons! The Rise of the Runelords Adventure Path continues! The evil beneath the town of Sandpoint refuses to sleep quietly, and a killer from the ancient past awakes. Clues found in his lair lead to the den of a legendary dragon and into a vast arcane dungeon ruled by ageless wizards, where the seven deadly sins reign supreme. Can the PCs hone the sins within themselves into weapons against their true foe, Karzoug, the resurrected Runelord of Greed?

Decades ago, an Osiriani Pathfinder named Bossell locked his transformed lover in the vaults beneath the Sothis Pathfinder Lodge. He then vowed that no one would ever discover his secret shame. The old and senile Bossell now relies on his assistant Fendel for everything, and the hapless assistant has disapeared into the vaults after reading his master's journal. You've been sent beneath the Lodge to destroy whatever it is that Bossell's lover has become—will you survive his secret or find yourself transformed as well?

From the idyllically peaceful coastal town of Sandpoint to an ancient lost city at the top of the world, Rise of the Runelords takes a party of adventurers from 1st to over 15th level and delves into the mysteries of Varisia's ancient past. Millennia ago, the powerful empire of Thassilon ruled the land, dominated by despotic runelords who maintained their power through harnessing the power of rune magic. Thought gone forever, the working of Thassilon are not so far beneath the surface and one of the runelords plans a return to power. Only the brave adventurers stand in his way. ” Burnt Offerings Five years after a tragic fire and spate of brutal murders, the people of Sandpoint eagerly anticipate the Swallowtail Festival to commemorate the consecration of the town’s new temple. At the height of the ceremony, disaster strikes! In the days that follow, a sinister shadow settles over Sandpoint. Rumors of goblin armies and wrathful monsters in forgotten ruins have set the populace on edge. As Sandpoint’s newest heroes, the PCs must deal with treachery, goblins, and the rising threat of a forgotten empire whose cruel and despotic rulers might not be as dead as history records.

Part 3 of the Shackled City Adventure Path "Wherein a tribe of the Sea Mother's children suffer for sparing the life of a mad prisoner they probably should have eaten." Synopsis: The adventure begins with an Umber Hulk attack in the middle of the city. The fame gained by assisting during the attack allows them to gain the notice of a representative of Davked Splintershield. The group is asked to rescue Zenith Splintershield from a Kuo-Toan temple in the Underdark. But to find it, they have to visit Crazy Jared to locate an entrance to it. Upon journeying to Crazy Jared's, they fight Hookface's offspring. After more travelling, they are able to descend into the Underdark. Once they find the Kuo-Toan temple, they must fight through many hard challenges, only to realize that Zenith is not a prisoner, but instead is a prophet. Zenith does not go willingly, and so must be captured. Pgs. 28-61

The pearl divers of Shoalbury are in trouble. A band of birdlike kenku and ogres have been ambushing and plundering outgoing shipments of pearls, and the villagers are growing desperate. And why are the bandits stealing eyes from the bodies of their victims? A single guard survived the most recent ambush with one eye intact, and his testimony may just be enough to lead a brave band of adventurers to the bandit lair, and to the sinister cult they serve.

A mechanical man discovers his ancestral fortress has fallen to a lunatic derro, but something worse than mad derro haunts the Clockwork Fortress' gears. This adventure is a sequel to Dungeon Issue #115's "Raiders of the Black Ice," although you need not have run that adventure to enjoy "The Clockwork Fortress." Pgs. 42-61

Evil schemes are afoot in Cauldron, a metropolis of merchants built into the caldera of a long-dormant volcano. To foil the agenda of evil cultists, your band of adventurers must brave haunted jungle ruins, slay mighty dragons, and bind themselves to a layer of the infinite Abyss. Will their swords and spells be enough to save the Shackled City? Originally published as 11 linked adventures in the award-winning Dungeon magazine, the Shackled City Adventure Path is the most ambitious official Dungeons & Dragons campaign ever created. Now, for the first time ever, everything you need to play the campaign has been compiled into a deluxe 416-page full-color hardcover that also includes an 8-panel fully detailed map of the City of Cauldron, a 16-page full-color map and illustration booklet, and a brand new Shackled City adventure written by fan favorite author Christopher Perkins.

When the Black Marquis lost all of the men he could trust on a failed treasure hunt, he did the only thing he could: turned to the Pathfinder Society for help. Offering an ancient lost text in return for assistance, the Black Marquis of Deadbridge sends you deep into the spider-haunted Echo Wood of the River Kingdoms to track down his missing pirates and recover an ancient treasure for the Society. You'll face brigands, pirates, spiders and more—but will you survive the perils of the Pirate Pact?

In this adventure the heroes invade Susurrus, the palace of the githyanki lich-queen and attempt to end Vlaakith's reign forever. The adventure begins when Zetch'r'r, a githyanki warlord petitions the heroes to confront and destroy Vlaakith. However, the lich-queen's spies know of Zetch'r'r's treachery and are preparing to deal with him and the PCs.

Centuries ago, the priest-king Kyuss sacrificed his nation to fuel his lust for divinity. He left legions of the hungry dead in his wake, along with a ruined city that now hides the truth behind the coming apocalypse. A man became a god in this worm-eaten city, and the secrets hidden there may hold the key to his defeat. "The Spire of Long Shadows" is the seventh installment of the Age of Worms Adventure Path, a complete campaign consisting of 12 adventures, several "Backdrop" articles to help Dungeon masters run the series, and a handful of poster maps of key locations. For additional aid in running this campaign, check out Dragon's monthly "Worm Food" articles, a series that provides additional materials to help players survive this campaign. Issue #339 of Dragon presents a magical pool owned by Manzorian that can give the PCs just the edge they need to survive what awaits them in the "Spire of Long Shadows." Pgs. 59-89

Someone kidnapped Lady Anilah Salhar—the Chelish wife of Dremdhet Salhar, one of Osirion's many Grand Ambassadors to Absalom—and sold her into slavery. With Salhar holding delve permits over the heads of the Decemvirute, the Pathfinders are sent to assist the Osirian Ambassador. Venturing into Absalom's darkest corners to save Lady Anilah, the Pathfinders must face the secrets of the Slave Pits to avoid becoming slaves themselves.

Iggwilv. Orcus. Maleanthet. Obox-Ob. Charon. These names are among the most notorious in the multiverse, appellations belonging to some of the most dangerous and powerful creatures on the lower planes. Heroes from countless worlds have raised their arms against these immortal foes and, in most cases, these heroes have perished to their soul-blasting, life-ending might. Their lairs are notorious as they are: the River Styx, beautiful but deadly Shendilavri, the Gray Wastes of Hades, frozen Thanatos, and mind-numbing Zionyn. Simply entering one of these scions of evil is akin to suicide. Yet now, as the Prince of Demons begins the final rituals to bring the savage tide to the Material Plane, heroes must approach these immortal villains not as enemies, but as allies. "Enemies of My Enemy" is the eleventh chapter in the Savage Tide Adventure Path, a complete campaign consisting of 12 adventures appearing in Dungeon magazine. For additional aid in running this campaign, check out Dragon magazine's monthly "Savage Tidings" articles, a series that helps players and DMs prepare for and expand on the campaign. Issue #358 of Dragon magazine features a map of the River Styx and advice for those who would use this notorious river as a route in exploring the lower planes. The time draws near for the final assault on Gaping Maw, but first the PCs must recruit allies from the depths of the Abyss to the eladrin Court of Stars. yet will this unlikely alliance of demons and eladrins be enough to stop the Prince of Demons? Pgs. 40-85

Every seven years, the elven village of Mellorell hosts the Festival of Life, an opportunity to trade, shop, and celebrate with the folk of nearby lands. But a dark secret that could cost the life of fairgoers draws the heroes into a plot that leads all the way to Hades. The core of the adventure is a short thirteen room lair with grimlock guards, a basilisk pet and Malifustal the Night Hag, who guards a portal to Hades. Pgs. 12-33

Part 1 of the "The Devil We Know" campaign arc. Shipyard Rats is a Pathfinder Society Scenario designed for 1st to 7th level characters (Tiers: 1–2, 3–4, and 6–7). When simultaneous kidnappings of Pathfinder and Aspis Consortium agents rock Cassomir's Imperial Naval Shipyards, the Society orders you to join forces with hated Aspis agents to solve the mystery. Can you work together with the enemies of the Society to uncover the source of the kidnappings, or will you perish in the shipyards of Cassomir?

The High Hunt leaves the streets of Waterdeep and heads beneath the City of the Dead where monstrous criminal overlords compete for the favor of their mysterious master. It will take more than skill with a blade to cut through the web of deceit and treachery that surrounds the Vampire Master of Waterdeep. Do you have what it takes to survive the Dungeon of the Crypt? "Dungeon of the Crypt" is part two of the three-part Vampires of Waterdeep Campaign Arc. Pgs. 62-88