"The Clockwork Tower" is an azza gremlin lair suitable for five 3rd level characters. This adventure can be completed in one session.

Hada the Black, a necromancer who was apprehended during an investigation of five missing orphans perished last night in the custody of city officials. The inquisitor who questioned Hada is certain that the children are still alive. After the characters hear of a contract offered by the city guard, they discuss the situation with the inquisitor. The tired and disheveled man smooths his crimson robes as he speaks.

Kidnapping and politics as usual? Not so much. Something is different about this job, and you just hope that difference doesn’t get you killed. Contains sexual content.

"Lost Halls of Everforge" is a flame dragon wyrmling lair suitable for four or five 3rd level characters. This adventure can be completed in one session.

Multiple groups seek a thug’s girlfriend through the streets and alleys of Zobeck. The adventurers’ lives may depend on finding her first.

"The Hive" is a spawn of Arbeyach lair, also featuring giant termites and termite swarms, for five 6th-level characters. This adventure can be finished in one session. Several mounds in the Forsaken Hills are the dens of voracious termites that have added flesh to their diet to supplement dwindling wood supplies. At night, swarms of termites hunt and devour prey. They swarm over victims in wooden carts and wagons, and bring the dismantled wood back to their mounds. Three spawn of Arbeyach, searching for a location to summon Ia'Affrat, Arbeyach's herald, discovered a mound filled with particularity nasty termites and used their vermin empathy to gain acceptance. They dug out a cavern beneath the mound, and now use the termites to protect themselves and gather food while they complete a difficult ritual involving dozens of sacrifices. The final sacrifice is prepared and the spawn are finishing their ritual when the party arrives.

The party arrange for passage on a fast ship called the Silver Slipper. The good Captain Sara agrees to take them aboard for a reasonable fee. The voyage, however, is marred by strange events, and the crew begin whispering about a dark statue taken aboard as cargo. The statue is to be delivered to a port beyond the PCs' destination. When a fog rolls in one night, the ship is attacked by evil agents of a dark god come to claim the statue. In this nautical nightmare, the PCs must travel aboard the ship, interact with the crew, and save themselves from a boarding party of eldritch evil.

In the thriving city of Zobeck, a breakdown of the vital Puffing Bridge is throwing a wrench into the entire city. Workers can’t reach their jobs, merchants and goods can’t reach markets. In short, if this problem isn’t fixed quickly, there’ll be chaos in the Free City. Of course, this isn’t a simple mechanical breakdown but an act of sabotage, and the saboteurs are still at work when characters arrive to investigate.

Fight the Monster in its Den … If You Dare! Book of Lairs brings you 24 great monster lairs for 5th edition! Each of these exciting and unusual battlegrounds comes with a complete short adventure, including a hook, area hazards, tactics, and treasures. Stage your 5th Edition fights in unforgettable locations like: Alchemist’s Guildhall Necromancer’s Cistern Clockwork Tower Den of the Rotten Kings Lost Halls of Everforge A Pirate Cove Crypt of the Warlock Citadel of the Void Dragon A Dark Grove Lost Fane of the Serpents Branches of Yggdrasil Tomb of the Scorpion Prince Sky Stairs of Beldestan Imperial Ghoul Outpost Umbral Vampire Lair And 10 more! Designed by some of the top names in the RPG industry, Book of Lairs is sure to add an aura of wonder and mystery to your game! Book of Lairs uses standard monsters as well as surprising new creatures from Tome of Beasts, and both monster books are required for maximum playability.

"The Pirates' Cove" is the lair of a blasphemous cult, suitable for four or five 5th level characters. This adventure can be finished in a single session.

The mountains are the border between our kingdom and the realm of the fire giants. Look far eastward. See how the peaks turn black? Their forges must burn night and day to mark the mountains so. Some mornings, sunrise dims from the smoke and soot. Long have we watched the pass and tallied our fortunes at its stillness. Recently, though, there are signs our luck is turning. Fiery orbs sail through the night skies and land too near these woods. Scouts report deep craters shrouded in smoke and ash. One sits a mere hour’s walk from this outpost. I fear the enemy makes ready some terrible weapon . . .

A kobold king lair suitable for four or five 8th-level characters. King Qalqat is gathering followers in a bid to establish his own realm. A wanted dragonborn fugitive, Brustival recently joined his ranks and his power. However, Brustival is now a wanted man and there's a bounty on bringing back his head to the local magistrate.

Sky Stairs of Beldestan is a vampire warlock lair suitable for four characters of 14th level. It can be a lead-in to Citadel of the Void Dragon, or it can be played independently. For as long as any dragon can remember, the stairs of Beldestan have been a site of pilgrimage, a direct route from dusty earth up to the heavens, where enormous creatures soar and carry sacrifices up to the gods. Its base is well known for the efficacy of the invocations offered there, but very few other than the most faithful dare venture up the stairs themselves: enormous eagles, howling winds, and various inimical undead make the stairs a place that few find congenial for long.

While traveling through a jungle expanse, the party meet a trader named Smera with a strange tale. Turned away from a nearby outpost, the trader is now heading back to civilization. Curiosity leads the party to the outpost, which has been destroyed. A strange disease has taken the outpost’s inhabitants, who built the place in support of a scholarly excavation of a nearby temple ruin. Following the path carved through the jungle by the excavation team, the PCs find the temple and its secrets. In this moss-covered and dark adventure, the party explores an old temple, faces its verdant guardians, and finds the source of the strange disease.

"The Dark Forest" is an elder shadow drake lair suitable for four 8th-level characters. This adventure can be completed in one session. A hidden grove within a dark forest has been home to a tribe of alseids for generations. The tribe's most recent leader and spiritual heart was an alseid shaman called Riatha the Raven. Within the grove lies an ancient ring of standing stones atop a burial mount. Here, Riatha conducted sacred nature rites to honor and bless the forest and the tribe. During one of these ceremonies, the ground rumbled and a column of dense black energy shot straight up from the burial mound and into the night sky. Thick darkness enveloped the area, and the suddenly blinded alseids heard terrible roars. An instant later, the darkness dissipated to reveal a mysterious pool ringed with skulls among the standing stones. Two large, dragon-like creatures with black scales and burning red eyes glared at the confused alseids. One the ground lay the body of Riatha, deathly still. Terror and chaos followed as the creatures brought swift and sudden death, killing most of the alseid tribe members with razor-sharp teeth and deadly, black breath. The alseids that survived the inital, bloody attack fled into the forest. They counterattacked a few hours later, desperate to reclaim their grove and recover the body of their beloved leader, but the attempt was a fiasco and they were quickly driven off. Now, the few remaining alseids hide in the forest, frightened and unsure of what to do next.

"Den of the Rotten Kings" is a wererat lair suitable for four 3rd-level characters. This adventure can be completed in one session.

This is an adventure for four 6th to 7th level PC's that may be completed in a single session. The Untamed are a street gang in a busy city. A recent change in leadership has transformed the members from pickpockets and second-story thieves into kidnappers for an inter-dimensional aberration named Xlrieh'oc. Their hideout is now a strange and wicked factory, capable of extracting the firm essence from a person; the process leaves the victim partly ethereal and their form no longer casts a shadow. Although most victims die during the procedure, those who survive are conscripted into the gang. The extracted essence is crated and shipped to the aberration's home plane through a breach between worlds in the hideout's backroom.

We saw it—don’t turn your heads. Up near Hilltop Crossroad and the temple. It walked south; the trees fell in its path. Even the moon hid. Gods help Father Dren . . .

A small band of centaurs have seen their water source fouled by unknown magic. When word of their plight reaches the party, they embark on a day's travel to the centaur camp. Along the way, they encounter injured wildlife and panicked bugbears. Terrifying storms beset the region, raining down acid and oozes. Agreeing to investigate the small corrupted lake, the adventurers discover a long buried evil has awakened—bringing with it oozing undead. The party must navigate the wilds, face the ooze storms, and confront a reanimated warrior who betrayed her god.

"All-Seeing Eye" is a oculo swarm and night scorpion lair for five 5th-level characters.