Wicked forces conspire to usurp the power of the Raven Queen, god of death, by unraveling the foundations of reality. To prevent this cosmic coup, mighty heroes must survive an epic journey into the Shadowfell's timeless core, where all things find their end. The beginning of the end of the original 4th edition adventure path (although ties are very light to the heroic and elite tier adventures). The PCs must first prove themselves worthy to act as the Raven Queen's agents. They will then be sent to Death's Reach, a graveyard and dumping ground from the Dawn's War. There, they must fight through the Black Star Host- powerful elemental beings, to prevent Orcus was resurrecting a primordial, Timesus the Black Star. One notable encounter is a random encounter with the Worm of Ages. This huge worm has the ability to swallow and rules for moving creatures from its maw to its throat, gullet, and into the stomach.

The Auburn Desolation is a forsaken waste of treacherous sand and unbearable heat within the Shadowfell. Gloom-wrapped serpents and foul undead haunt the wastes, striking out at unsuspecting travelers from sandy graves. Pgs. 88-95

From The Magazine: "Every summer, Duke Hightower holds a competition quite different from the traditional jousting and archery tournaments held by similar lords of his station. The rules of his tournament change from year to year, and, to oversee the games, the duke has appointed two wizard brothers who help choose the setting and create the rules and challenges of the competition. This year the competition is called the “Owlbear Run,” an overland race that requires each participating team to escort a live owlbear from the town of Telvorn to the town of Milvorn. The teams will face a variety of challenges; some are devised by the wizards, others by the competing teams or their sponsors, and some occur entirely at random. All of these tests are in addition to the challenges inherent in motivating a temperamental owlbear. Fortune and fame await the first team to cross the finish line, and the local lords sponsoring the race are eager to enlist skilled champions for their causes." Pgs. 2-27

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

"The Keepers of the Celestian Order, valiant defenders dedicated to destroying horrors from the Far Realm, have trapped a beholder in its lair. However, the evil aberration has proven far more dangerous than expected, and the Keepers need the help of adventurers to end the threat of Omaranthax once and for all. This Dungeons & Dragons Roleplaying Game adventure, created for Free RPG Day 2012, pits player characters against a mutated beholder and its vile underlings. Although set in the Forgotten Realms campaign setting, the adventure can be easily adapted to any* D&D world." *: The adventure mentions that it is suitable for any setting touched by the Spellplague.

The mine has been known as Tessount’s Folly for years, due to it producing nothing of value. Now Valmour, the youngest son of the mine’s late owner, has inherited the mine...and found something he should have left buried. Pgs. 56-81

The seaside town of Ashenport has a troubled past and a dark secret. If you spend a night in Ashenport, you just might not wake up the next morning. "The Last Breaths of Ashenport" is an adventure of survival and alien horrors. The adventure is self-contained and can be placed in any setting. Pgs. 70-105

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)

A green dragon called the Dawn fancies herself a deity and has attracted reptilian followers that raid elven settlements. The PCs must find her temple in the woods and end the threat. Pgs. 78-83

A cold winter wind blows from the Scourge Mountains, but its origins are not of this world. And with it come horrifying stories of a fey who walks the land. Cold, beautiful, and deadly, she turns every mortal she touches into a statue of ice, and she seems determined to blanket the entire north in a blanket of frost. It is the Winter of the Witch…and if the archfey Koliada is not stopped, it could be the world’s last. “Winter of the Witch” starts with the PCs receiving an urgent but somewhat cryptic message from the skeletal knight, Sir Keegan. They find the skeletal knight a helpless victim of an aggressive interrogation by an undead minion of Orcus and his demonic thugs, who are attempting to extract the location of something called the Sun’s Sliver from the stubborn knight. The PCs fight their way into deep ruins, defeat the demon lord’s toadies, and retrieve the Sun’s Sliver. Once the PCs have recovered the Sun's Sliver, they must confront the Winter Witch in Winter's Heart, the witch's icy sanctum in the Feywild. Only there can they confront the cold-hearted archfey and save a section of the world from a wintery doom.

A band of mercenaries -- the Stormcrow Company -- laired beneath the Tor, but no on has heard of them for a while. Their lair and treasure may be up for grabs.

The Raven Queen’s servants often seek out mighty allies. One of these is the black dragon Quetzallus, who resides in a deep cavern on the Shadowfell guarding a stream of souls flowing into the Raven Queen’s realm. But a death knight named Raxikarthus, betrayed by the Raven Queen in life, now seeks to enslave this dragon for his own purposes. He madly believes that he can stand against the Raven Queen, and seeks allies of all stripes—even her own servants—to do so. The death knight has found a pathway into the Shadowfell thought closed by mortals. Beneath a decayed keep, the undead dragonborn has reopened this portal and led his forces into the Shadowfell itself. The PCs are called in to beard the death knight in his lair. They find it abandoned, but discover a strange passage in the lower reaches. Pgs. 162-167

While camping in the wilderness, the characters find a tracker surrounded by wolves. Once the heroes dispatch the beasts, the tracker reveals that she is seeking aid in the fight against the darkness enfolding her community, Silver Lake. Should the characters help, they find the village terrorized by lycanthropes that hail from a tiny island rising from the mist-shrouded lake.The island is a fey crossing, and heroes who set foot on it find themselves in the Feywild, where a war is brewing; the lycanthrope clans are at each other’s throats, and many are turning their feral eyes outward to the rich lands beyond their secluded valley. To avert an unimaginably savage war, the heroes must rescue a werewolf lord from his captors and expose the conspiracy that threatens to drench the Feywild in blood...

In “Rescue at Rivenroar,” the player characters must brave the depths of ancient catacombs in search of prisoners taken from the town of Brindol in a midnight raid. The hobgoblins, bandits that style themselves after an invading horde from long ago, have taken refuge in a dungeon under a ruined mountain fortress, and the PCs must clear them out to find the captive townsfolk and the treasures taken from Brindol. “Rescue at Rivenroar” also marks the first step in a great journey - the Scales of War Adventure Path, which spans 30 levels and put the PCs at the crux of events that shapes the world for centuries to come. While the scope of this adventure isn’t as grand, it represents the seed from which an epic tale will surely grow. Pgs. 4-45

A Conspiracy of Doors is a Dungeons & Dragons adventure for five player characters of 11th level. It can serve as an introduction to Sigil, the City of Doors, as well as a group of adventurers' first taste of action at the paragon tier.

The adventurers have delved into the Abyss to strike at the Demon Lord of Undeath, Orcus. On the layer of Thanatos, the Blood Lord has many outposts from which he spreads his corruption. One of his primary lieutenants is Doresain, the Ghoul King. If the PCs kill Doresain in his lair, they will strike a real blow against the foul demon lord. Pgs. 174-179

Reavers of Harkenwold pits the heroes against the Iron Circle, a company of cruel mercenaries that has seized control of the small land of Harkenwold. In this adventure, the heroes become daring rebels and lead the folk of Harkenwold against their oppressors.

An ancient cave, defended by ancient death traps and weird arcane seals conceals the antediluvian vault of an archlich whose reign predates recorded history. Undisturbed for untold eons, the vault now stirs thanks to the machinations of cultists who have meddled with secrets best left undisturbed... This module sends the heroes to an ancient cave occupied by cultists dedicated to the Mists of Madness. Defended by ancient death traps and weird arcane seals, the caves conceal an antediluvian vault, the resting place of an archlich whose reign predates recorded history in the Known Realms. Undisturbed for untold eons, now the machinations of the cultists and their eladrin master threaten to awaken the archlich, to dire ends that none can predict.

Something stirs in the dark heart of the Warwood, and in response something stirs in the stars. A simple encounter with bandits on the road leads the PCs to a frightening place where even dreams are deadly. Cultists seek to free the soul of a terrible entity from beyond the stars. The PCs must retrieve the soul vessel of a long-dead evil paladin to stop cultists’ plan from coming to fruition. Pgs. 60-92

The hobgoblins were not the only forces that remained after Kalarel was slain. Before the Keep’s portal was fully sealed, evil spirits from the Shadowfell escaped into the Nentir Vale. They were drawn to Kalarel’s own dark soul, which remained in the mortal world thanks to a spirit-orb the priest had created to prevent him from moving on after death. The presence of these malignant spirits caught the attention of a frost witch called the Rime Mistress and her followers—unaligned territorial beasts—who rose up to defend their domain. The Rime Mistress knows that the spirits present a greater threat than the hobgoblins do, so she and Prang, the Iron Gauntlet leader, have agreed to an uneasy truce. Thus, the hobgoblins and the creatures of the Cairngorm Peaks are united in their struggle against Kalarel’s spirit army.