If you are seeking an inexpensive monster compendium focused on demons and outsiders, this is the book for you. If having a detailed envirnoment to tie all of the monsters together would be useful, even better. Need a reason for extraplanar creatures to be on the Material Plane? The detail on the Blasted Realm provides this as well as an overarching storyline should you wish to use it.
Detailed descriptions and maps of the Blasted Realm, a pocket plane of chaos and evil! 24 new and unique creatures - evil demonic denizens of the Blasted Realm, spanning a wide range of Challenge Ratings!