This seems to be the only one out of the series that focuses exclusively on one god. This weird god of assassins is also responsible for hospitality, which grants his followers a certain amount of flexibility in a fantasy world. If you have a player that's been wanting to play a true assassin but were worried about how to allow it, this product solves the problem. Mostly a fluff product with not a lot of crunch. But if you need ideas on how to run an assassins' guild in plain sight of the law, this is really the perfect product. Lots of well thought out background information to help you mesh this god into your game.