From the Introduction to The Cirian Legacy:
Welcome Inquisitor. You hold in your hands the first in a series of enlightened tomes; a guide to one of the many dark areas of the galaxy that calls for the attention of the Inquisition. Each Inquisitor: Conspiracies book will concentrate on a certain world, planetary system or hive, detailing its political structure and history, prominent geographical areas, climate and its important continents and cities. Important characters such as planetary governors, politicians, sect leaders will also be profiled. Most significantly, each Inquisitor: Conspiracies book will contain a number of campaigns ready for Gamesmasters to pick up and use.
The goal of the Inquisitor: Conspiracies series is to provide Inquisitor players and Gamesmasters with a detailed setting to play their games. We also hope to inspire Gamesmasters to create their own worlds and 'adventurescapes'. As explained later, the campaigns detailed should not be seen as written in stone but can be used in a setting already thought out by the Gamesmaster if he prefers. Maybe only one of the scenarios would be suitable, if so feel free to adapt them for your own use! The campaigns should be used to motivate Gamesmasters to write their own - we have simply provided a universal format that is (hopefully!) easy to use and understand. Remember, the aim of Inquisitor: Conspiracies is to inspire, not dictate.
The Inquisitor: Conspiracies series will not end with the books but will continue on the Internet. Exterminatus.com is the official Inquisitor website where you can find more information and campaigns written by fellow gamers set in the Cirian Adventurescape. We could always do with more, so if you're written a campaign based on the world described in this book (or even a campaign that can be easily converted into the Cirian Advanturescape) then pop over to Exterminatus.com and check out the writers guidelines.