Forgotten Realms: The Dungeons Series by Erik Scott de Bie, Jaleigh Johnson, Rosemary Jones, Bruce R. Cordell

The last thing she remembers is seeing her friends die... Now it's her turn. Eldritch and forgotten arcana wait within its vaults. Twisted accidents of magic prowl its halls. Sinister forces lure the unsuspecting deeper into death or madness. Its victims don't remember how they got there. No one remembers how to get out...

Explore some of the most dangerous places in the Forgotten Realms -- The Dungeons! An orphan mage returns to the only home she's ever known to find if transformed into a dungeon, her former master missing or trapped within. To make matters worse, the thieves that hold the dungeon won't let her leave --not for supplies, not for help. It will take all of her courage, skill, and magic to survive long enough to figure out what happened to her home.

The deeper you go, the more dangerous it gets! Explore the Dungeons! All Kiril Duskmourn does is run away--from guilt, from her past, and from her responsibilities. But she can't run any longer. She lost everything stopping the Traitor from loosing his unholy revolution, and now the bindings on his cell are weakening. She alone holds the key to his release or further imprisonment. But does she still have the strength of will and arm to make the right choice?

Explore the terrifying depths of the dungeons of Faerun with the merriest band of misfits to ever dig a tunnel!The Siegebreakers are a tight-knit group of eccentric mercenaries who boast they can safely bring down the walls of any fortress, and will do so for the right amount of coin. But when the walls of their latest job crash down on their heads, trapping them in ruins treacherous with magic, monsters, and ever-rising water, it's all they can do to stay alive... moreExplore the terrifying depths of the dungeons of Faerun with the merriest band of misfits to ever dig a tunnel!The Siegebreakers are a tight-knit group of eccentric mercenaries who boast they can safely bring down the walls of any fortress, and will do so for the right amount of coin. But when the walls of their latest job crash down on their heads, trapping them in ruins treacherous with magic, monsters, and ever-rising water, it's all they can do to stay alive. Undaunted, the Siegebreakers are determined to escape and finish the job. If only the camel hadn't eaten their breakfast. less