I was a bit wary of this book when it came out (why would I need a Dungeon Master's Guide when the Ravenloft Campaign Setting book is perfectly serviceable) but being a fan I picked it up anyways. I wasn't disappointed, this books is full of candy and while you don't need the information par se, it comes in handy. It is a very good highly detailed read. A lot of the information is handy just as a means to streamline your campaign and save you time, such as the NPC generator and town and city creation guide. As with many DMGs there are hints on handling problem players and avoiding the usual pitfalls that might run your story awry. It contains nice artwork as to boot. It is recommended you pick up the Ravenloft Tarroka deck as well, as there is an entire chapter on how to best make use of it, though you can create your own deck based on the description of the cards.