The sewers beneath Mulmaster have always been dangerous, with countless stories of brigands, murderers, and worse that lurk beneath the streets of the City of Danger. But those stories pale in comparison to a new threat under Mulmaster, one brought to light by a strange and disturbing corpse recently found. It is up to you to learn the terrifying truth of what lurks below.

A succubus with an unquenchable lust for power is turning the Cage into a ripping madhouse. And the Lady of Pain ain't pleased. . . . Something's foul in Sigil, berk. A mad slasher prowls the streets, leaving a trail of bloody clues in his wake. Leatherheads boldly court the Lady of Pain, longing for the sharp touch of her shadow. Even the silent dabus're acting barmy, a sure sign that the Lady herself is uneasy. Are these strange events tied to a madhouse full of spell-touched sods ready to slip the bonds of mortality? A curious body'd better step carefully. After all, the dead-book's full of fools who wished for power?or got in the way of another berk's wish. Harbinger House is a Planescape adventure for four to six characters of 4th to 7th levels. From Sigil to the Outlands and back again, the heroes must piece together a puzzle that could shake the Cage to its foundations. A dark secret of the multiverse wails to be discovered in the lunatic asylum called Harbinger House, and only the player characters can shape its power-for good or ill. TSR 2614

Caravans are having a difficult time getting through to Parnast via the Black Road. Organized attacks by orcs and other monstrous humanoids working in concert with one another have folks baffled. Little do they know that an unusually intelligent hill giant, going by the name of Bad Fruul is to blame. SEER has sent her emissary Hsing, to task your group to accompany a caravan with a very special cargo destined for the Shrine of Axes in Parnast, and to figure out who is responsible. A Two Hour Adventure for 1st-4th Level Characters

Mykon Drift, genius inventor and entrepreneur, has disappeared on the eve of his greatest ever product launch, and nobody seems to know why or where he’s gone. Certain jaded onlookers might think this is for the best, for Drift is a disrupter in the truest sense, and the technomantic marvels he creates often wreak havoc on the guilds and economies of the Sword Coast. But titans of industry like Mykon Drift don’t just disappear for no reason, and his most loyal apprentice is willing to pay to find him. Unfortunately, that apprentice isn’t willing to pay very well, so what they get is the Grib-bits Detective Agency. "The Gribbits Detective Agency Part II" is a Dungeons & Dragons adventure for four 2nd-level characters. It is designed to follow on from "The Gribbits Detective Agency", and should be played in a single sitting.

Agents of the fire giants of Maerimydra, a city in the Underdark, have overtaken the drow outpost of Szith Morcane. The factions seek out adventurers to free the outpost’s leaders for questioning on the giants’ activities. Can you extricate them before it’s too late?

A Book of Books Candlekeep Mysteries is an anthology of adventures written by members of the Dungeons & Dragons community. Each adventure begins with a book that the characters find in Candlekeep, an enormous library located on the Sword Coast in the Forgotten Realms setting. If you're not running a Forgotten Realms campaign, you can adapt the adventures in this book for other settings, substituting any large library similar to Candlekeep. Examples from other published D&D settings include the following: On the world of Exandria, the Soltryce Academy in Rexxentrum (a large city on the continent of Wildemount) or the Cobalt Reserve in Westruun (a small city on the continent of Tal'dorei) On the world of Eberron, the Library of Korranberg in the nation of Zilargo, the University of Wynarn's library in the nation of Aundair, or Morgrave University's library in the city of Sharn On the world of Oerth, the Great Library in the Free City of Greyhawk Contains: The Joy of Extradimensional Spaces Mazfroth's Mighty Digressions Book of the Raven A Deep and Creeping Darkeness Shemshime's Bedtime Rhyme The Price of Beauty Book of Cylinders Sarah of Yellowcrest Manor Lore of Lurue Kandlekeep Dekonstruktion Zikran's Zephyrean Tome The Curious Tale of Wisteria Vale The Book of Inner Alchemy The Canopic Being The Scrivener's Tale Alkazaar's Appendix Xanthoria

The Approaching Swarm is a short adventure for four 9th-level characters. The party can consist of any mix of classes, but it should include at least one character that is good in wilderness settings, such as a druid, ranger, or barbarian, and at least one cleric. This scenario should prove a reasonable challenge for characters from 8th to 10th level. The adventure takes place in a swampland that is near a small settlement. The characters attempted to cross back through the swamp to their base of operations. Along the way, they may have got stuck in mud and probably were attacked by a variety of flying insects. They arrive just a bit too late to stop a massacre that occurred back at Crivdall -- the fort is ruined and it appears that almost everyone is dead or missing. Aleretheral, an insane half-orc druid who has mastery of vermin and insects, attacked Crivdall with his insects. He has often infiltrated Crivdall by posing as a harmless elf hermit who lives in the wood. In reality, he wants the settlers destroyed and out of his swamp.

The first savage tide has already touched the mortal world, yet none who live today recall this time of red ruin. Unleashed from the cruel heart of a fell seed known as a shadow pearl, this savage tide swept over an ancient city perched atop the crown of a remote island. The tide transformed beggar and noble, merchant and thief, resident and visitor into feral, ravenous fiends. The fruits of centuries of labor came crumbling down in a matter of days, and when the survivors tried to stem the tide by destroying the pearl, the resulting blast of power sunk their city into the boiling lake of death. Through it all, the Abyssal architect of the savage tide watched, taking pride in the ruin. When the tide's final ripples had faded, what was left became known as the Isle of Dread. Now, after a thousand years, the true masters of the Isle of Dread look upon new targets, new cities beyond the horizon, compelled by the hateful will of their demonic lord Demogorgon to prepare for the coming glory. This time, the doom will not be limited to one hapless city. This time, all of civilization waits unknowing on the shore, blissfully ignorant of what the incoming tide brings in. "There Is No Honor" is the first chapter of the Savage Tide Adventure Path, a complete campaign consisting of 12 adventures that will appear in the next twelve issues of Dungeon. For additional aid in running this campaign, check out Dragon's monthly "Savage Tidings" articles, a series that helps players and DMs prepare for and expand upon the campaign. Issue #348 of Dragon kicks off this series with details on six affiliations based in Sasserine that your players may wish to join. And if you're running Savage Tides in the Forgotten Realms or Eberron, make sure to check paizo.com for the latest conversion notes for each adventure. The Savage Tide Adventure Path debuts as a new band of heroes confronts exotic monsters, undead pirates, and a sinister guild of thieves on the cusp of unleashing a murderous coup. Pgs. 14-46

A group of snaketongue cultists has occupied an abandoned, partially sunken temple near a swamp. They grow impatient waiting for their yuan-ti master to join them, unaware that he has been slain by a rival faction of yuan-ti. Frustrated, the cult strikes against nearby villages in the hope of drawing the favor of Zehir. Investigating rumors of a serpent cult harassing a nearby town, the PCs have explored the swamp and discovered the overgrown temple. Its once-ornate stone door now hangs off its hinges, providing a narrow space for one character at a time to squeeze through. Pgs. 42-47

Into the Forsaken Temple's Crypt is a short adventure for four 10th-level characters. The adventure takes place in a buried temple crypt, which has been sealed for centuries. Dungeon Masters can adjust it for higher-level characters by widening the dead magic areas and increasing the number and power of constructs and undead that inhabit the complex. The PCs have entered the Forsaken Temple's crypt and started exploring a bit. They may have tangled with a pudding, and further warnings of danger greeted them. Do they dare continue on?

At Restwell Keep, you've heard that fortune and glory await those bold enough to brave the dangers of the Chaos Scar, a valley carved ages ago by a fallen star. The same tales warn that this Chaos Scar draws wickedness to it. Perhaps you can help stem this tide... and gain treasure along the way. While the location is a different keep, this adventure is an homage to B2 Keep on the Borderlands(https://adventurelookup.com/adventures/b2-keep-on-the-borderlands)

At the behest of Orcus, Demon Prince of Undeath, a mighty deathpriest hierophant has begun assembling a powerful strike force. He intends to launch the first of many assaults on the world, readying it for his master’s arrival. With the help of potent allies and grand rituals, the PCs have discovered a route to the Abyssal headquarters of this hierophant. This delve begins as the PCs teleport from the world to the first of a complex of interconnected chambers deep in the Abyss, linked only by portals. Pgs. 126-131

Despite the shaky alliance that exists with the elves of the Quivering Forest, they do not suffer trespass in their realm lightly, especially from common folk from nearby Phlan. A woodworker's recent blunder into the forest might set off a diplomatic incident. Can you help find him and mollify the aggravated elves?

The desolate, uneven country known to locals as Battlefield Downs is strewn with the scattered remains of the ancient dead. During the last terrible years of the old empire, a series of grinding military engagements played out across the rolling fields of Battlefield Downs. In one battle that was part of a wider, disastrous campaign that contributed heavily to Nerath's downfall, the Empire of Nerath's legions clashed here against ravaging gnoll packs. It is now a haunted place, where only the bravest dare to tread. Pgs. 72-79

A force of orcs has taken over a small hilltop keep. The PCs are engaged by the local lord to rid his home of the intruders. Fortunately for the PCs, the keep’s main doors are still damaged from when the orcs took possession, and entry is relatively easy. Unfortunately, the orcs are determined to stay. Pgs. 24-29

Dare to defy death in this adventure for the world’s greatest roleplaying game. The talk of the streets and taverns has all been about the so-called death curse: a wasting disease afflicting everyone who’s ever been raised from the dead. Victims grow thinner and weaker each day, slowly but steadily sliding toward the death they once denied. When they finally succumb, they can’t be raised—and neither can anyone else, regardless of whether they’ve ever received that miracle in the past. Temples and scholars of divine magic are at a loss to explain a curse that has affected the entire region, and possibly the entire world. The cause is a necromantic artifact called the Soulmonger, which is located somewhere in Chult, a mysterious peninsula far to the south, ringed with mountains and choked with rainforests.

The Alchemist's Eyrie takes the characters into a fortified dwarven tower, where they are sent to recover some needed items. When they arrive, they discover the tower has been captured recently by a warband of renegade lycanthrope dwarves. Between the interlopers and the remaining traps set by the late owner, the characters may find themselves in deep, despite the lack of head clearance.

Many Cannith creation forges were lost on the Day of Mourning, but a rogue artificer has uncovered one of those that pursued some of the most experimental and dangerous research during the Last War. But while seeking the forbidden knowledge in the forge, this explorer awakened a dark power that was more than she could handle, and that now threatens the region. Pgs. 4-34

You will take up the mantle of heroism in a grim world where simple survival cannot be taken for granted. These heroes will shape the world of Athas while they grow in power and prestige - or die trying. Your character has been asked to aid a secretive faction of the Veiled Alliance in the Free City of Tyr against an unknown assailant. Ashes of Athas is a 4e D&D campaign set in the world of the Dark Sun campaign setting.

"And they bade their slaves, 'Build unto us tombs to rival the palaces of the gods, for there shall we live or lives and sleep our deaths in splendor.' And the people of Maru-Qet wore their fingers down, broke their backs, burst their hearts to obey. Indeed they raised up great tombs to rival the palaces of the gods. And their masters were well pleased, for it was as gods they saw themselves." The brown dragon Urum-Shar lurks in a strange tomb, plotting schemes only a wyrm of incredible power could understand. Expanding on content from Draconomicon: Chromatic Dragons, this adventure takes the heroes into Urum-Shar’s dark and trap-filled lair, where they will eventually face the powerful dragon herself. The dungeon heavily employs the use of traps, with fewer monsters. The upper tomb consists of a great puzzle of twelve rooms, and the lower tomb contains the dreaded Urum-Shar, an ancient brown dragon and heir to the lost draconic empire of Maru-Qet. The dungeon has special protections against scrying and other divinations, as well as teleportation. Pgs. 55-90