At first I was a little concerned about picking up this adventure, since it looked a bit cheesy. However, after reading several other adventures for Beast and Barbarians, I decided to give it a go.
After reading through it I was impressed. The story line and adventure as a whole is well written. Also, it plays out like a good story. I also, like the start, gives you a good way to mess with your party. Waking up and not knowing where they are and why. The story line does a good job providing clues to help the PCs figure things out.
The Book of Lore on Demons is a great addition and provides some details on how to intergrate these beasts into your game.
The adventure at parts seem a bit constrained on the direction the group should go. Granted, it makes sense for the most part given the location of the adventure and what's happening behind the scenes. Just as a GM you need to be prepared if your group likes to go off the track a bit.
Over all given the amount of content and the quality, I found it worth the price and a good addition to my collection of Beasts and Barbarians material. Its also usable for any fantasy setting with minor tweaks.
[4 of 5 Stars!]