Let's start off this review with the bad and then end on a good note.
The book is good for what it is, but it is moreso the lack of advancing the story in a powerful and meaningful way to me. I admit that towards the end it got a lot better, but in all reality, the seige of menzoberranzan is still happening, a continuation of book 3, with seemingly not much happening in the city, or with the battle, other than say the Archmage escaping the confines of his imprisonment, and Triel bossing people around in the city. The party that we follow basically ran back to the underdark, had a premonition about some sea creatures that, since consuming other creatures, might know of a physical way to reach the abyss, and they found a boat to get them there, and Halisstra and Ryld fell in love and now worship a new goddess. This is basically the whole story of book 4.
Now let's get to the good stuff and why 4-4.5 stars, despite the above, is still inevitable. Firstly, as a continuation from what I said before, it is simple, but the descriptions of the interim adventures are still captivating. Although the plot is simple to describe, the way in which is delivered is very well done. The descriptions of the spells that are used, the various myriad of enemies that the party encounters along the way and unique encounters that the party find themselves in is well done. The description of Halisstra's fall from Lolth and the love she now shares with Ryld was well done, the nature of the party needing each other, but heeding to their drowlike nature of rivaling one another. The still funny quips and sarcastic nature of Pharaun. All are things I respect.
Did this book absolutely blow me out of my chair, no, but did this book deliver a captivating story that has some twists and is well written. Absolutely. And this is why I give the book 4-4.5 stars. Well done, and I can't wait to see what becomes of our bedraggled party in the next book.