Depths of Madness (novel)

Depths of Madness, by Erik Scott de Bie, is the first book of the loosely-related The Dungeons series.

"The last thing she remembers is seeing her friends die.

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.

Now it’s her turn."