Although "part of" the overall Elminster series of novels in the Forgotten Realms, Bury Elminster Deep is better thought of as being part of a subset trilogy within that series. It follows Elminster Must Die!, and won't make much sense if you haven't read that first. Then, the next book, Elminster Enraged is due out in August 2012.
Set in the nation of Cormyr, you'll see many of the characters using language or expressions specific to that region. Some readers might find this a bit confusing or annoying, but those familiar with the Realms will understand. In many ways, this book is a nod to prior novels and characters of the Realms, and even brings some characters who "should have died" (because of the spellplague or the 100-year "gap") into the present 4th Edition Realms. It is, after all, a world of magic, and many of these old characters will be familiar to long-time Realms fans.
Beyond the familiar characters, there is a large cast of characters to keep track of in this novel. And, in addition to the main plotline, there are quite a few secondary and tertiary plots to keep track of as well, making it a somewhat complex read. The overall story involves a threat to the kingdom by a truly old enemy from the past, and his plan involves numerous mind-slaves, spies, and dupes. On top of this, you have several different factions of loyal, semi-traitorous, and fully traitorous nobles that are each working toward their own agendas. Amid all the chaos and twists, our protagonists have to figure out what's going on, and how to save the kingdom. It's not your standard one-shot Realms novel with a simple, straightforward plot.
For me, this was one of Greenwood's best novels. I liked the twists and turns, and all of the competing, often backstabbing, nobles with their various interests. It made Cormyr feel more realistic, more alive, because you never quite knew who might show up next and how they might upset the main villain's plans or unbalance the efforts of the protagonists. Suzail felt like a living city. The main characters were compelling, and quite frankly they nostalgically reminded me of the "old" Realms that I grew up with and loved. It was a fun read, with plenty of humor and adventure, nods to the past, and characters old and new, to go along with the serious. Too many current novels in 4th edition are overly serious, overly dark, or both.
Lord Arclath, Amarune, Storm, Elminster, and Mirt were all very compelling and enjoyable. For those still seeking answers about the murdered goddess of magic, Mystra, you may be surprised. And if you like Greenwood's style, you won't be disappointed. If you prefer simple plots, aberrations, and quickly-defeated evil, this won't be the book for you.