From the back of the book:
Remember the good old days, when adventures were underground, NPCs were there to be killed, and the finale of every dungeon was the dragon on the 20th level? Those days are back. Dungeon Crawl Classics don’t waste your time with long-winded speeches, weird campaign settings, or NPCs who aren’t meant to be killed. Each adventure is 100% good, solid dungeon crawl, with the monsters you know, the traps you fear, and the secret doors you know are there somewhere.
Thanks to our Kickstarter backers, the Lost Level of the Crypt of the Devil Lich has been discovered and presented for the first time. This book includes eight all new encounters, crafted by a team of skillful dungeon designers intimately familiar with the original classic. It includes maps, handouts and fully developed new monsters to challenge four to six 15th level characters using the fifth edition of the
world’s most popular role-playing game.
If the players thought three levels of diabolical traps, puzzles and fearsome guardians was not difficult enough, the Lost Level provides even more peril for our heroes! Trapped corridors, a dark, deadly Zen Garden, a chessboard puzzle, chambers designed to harvest raw materials, and the failed clone experiments of the Devil Lich herself, all await the heroes in the Lost Level. Do your players have the courage, cunning and resources to navigate the challenges of a 4th deathtrap dungeon level? The Devil Lich awaits in her crypt….