Attention, spoilers below! But if my spoilers can refrain the reader from reading this book, then I will have done something useful.
I am aware that the Harpers series has a rollercoaster quality, and few books are definitely good. But this one is an obscene miscarriage that should never have been written. Not as bad as The Night Parade, of course, but still a good attempt.
Let's put it clearly. I read everything fantasy, from the most acclaimed masterpieces to the worst obscure rubbish. This doesn't mean that I can't tell the former from the latter, and we are definitely in the latter here.
And I am quite surprised, because I remember that I definitely liked Elfshadow. Not that I can remember the plot very well, so it didn't leave a strong impression, but I remember it as a definitely good book nonetheless.
Simply put, the moral of this book, the point that it wants to make, is that bards are a cool class in the AD&D game. Which is something that I know already, but this book utterly fails at making that point.
First and foremost, this book is a mishmash of a lot of Forgotten Realms stuff that contributes to make a very complex plot, but one of which the author has no mastery at all. A lot of stuff is thrown into the cauldron: Harpers, Knights of the Shield, Lords of Waterdeep, music, bards, riddles, a dragon, and characters from the previous book. The author is completely incapable of juggling all these topics, and the result is totally messy.
For example, the dragon does not really fit in the story. It seems that the author just threw in a dragon because, hey, this is Dungeons and Dragons, so, since I'm not putting a dungeon in, then I have to put in at least a dragon. But the dragon, which at first appears to be a relevant element of the plot, eventually turns out to be a small part of the background, and the deus ex machina that kills the villain at the end.
Many things in this book don't make any sense at all. Starting with the villain: she does all that she does because she wants to restore the honor of bardcraft. Seems a bit lame, huh? That's not all. She wants to take revenge on the world because the world has allowed the old barding colleges to fall into decline, and that she cannot forgive.
… Well, that's just idiotic. You want the barding colleges? Since you're so powerful and influential, you can start your own, right? Hey, wasn't a high intelligence score one of the requirements for bards in AD&D…?
Furthermore, what's the point of giving the scroll to Grimnoshtadrano in exchange for the Morninglark? Couldn't you get it in some other way, instead of basically laying down the means to thwart your own plans? Also, why do you cast a terrible storm, and when the dragon appears you immediately fly up, so that your amazingly precious flying mount instantly loses control and the dragon snatches you up? Couldn't you just hide in the huge Waterdeep crowd to escape the dragon? Hey, wasn't a high intelligence score one of the requirements for bards in AD&D…?
At least, I would have expected a bit of background for the villain's motives. There's nothing of the sort. She was a bard back then, with Finder Wyvernspur, and then fast forward a few centuries and she wants to destroy the Lords of Waterdeep.
Not that I see any direct connection between the Lords of Waterdeep and the decine of bardcraft, either.
So, all in all, the villain is an idiot, does a lot of unnecessary and dumb things, and the reader is not even given an explanation. Definitely one of the lamest villains in a fantasy book.
The main characters are also terrible. Very few insights are given, they are just a bunch of characters put in the typical AD&D party when their players were too lazy to write a decent background. Apart from saying that Morgalla started drawing because no one took her seriously with songs and dancing, nothing is said about Wyn, Elaith, or Vartain. Apart from stuff that is of immediate use in a game, such as Vartain's thieving skills, which come out of the blue, while the other thief, the one charged by Elaith to steal Danilo's ring, is totally forgotten.
A lot of other things appear to be totally random. For example, the relationship between the villain and the asperii might be a prelude to an internal struggle within Garnet, some sort of fall from grace. Nope. It is once mentioned in passing that the asperii is reluctant to obey its master, maybe because her motives are not so good, and then it is left as a loose thread.
What about Danilo being threatened with knives while planning to teleport to Blackstaff Tower? The foes were approaching, he could have grabbed Wyn and Morgalla (the scroll was already in his hand) and activated the ring before anyone could get close enough. But no, that would have been against the author's plot projects, so he must be a total inept, let Elaith and the mercenaries approach, and give in to his demands. The author must have taken inspiration from a lot of retards to design her characters.
I could go on for a while in describing how bad this book is, but I think it isn't all that worth my time, so I will deem this sufficient.