This book was an easy read, but the story went nowhere and the ending was anticlimactic.
The title was 'Maestro', which referred to Jarlaxle's masterful manipulation of events and major players in Faerun, but by about a third of the way into the story, he's already lost control. He ends up at the mercy of his enemies, stripped of his power, and has to be saved!
Drizz't has an insanity problem and no one notices, even though he starts attacking teammates. Well, Jarlaxle kind of acknowledges it, but shrugs it off. Give the guy a heal spell people!
Cattie-brie gets mind-raped by Gromph, but stands up to him (in her underwear?), so it's declared 'okay'. Then it was double okay because Gromph was all 'I didn't directly psychic rape you, I merely put a psychic rape time bomb in your head, so, like, I didn't enjoy it or anything.' The hell? I guess Salvatore just has to include at least one rape per book now. This one actually has two... Tiago raped Dahlia as well.
Speaking of which, while that whole psychic rape intrusion thing was going on, Cattie-Brie gets into a weird sex argument with her mage friend (Penelope or something?) I'm not sure if Salvatore's personal life is getting into his books or if he's just been reading too many Laurel K Hamilton books lately.
Entreri got his killer artifact sword/gauntlet combo back, evidently with him in charge. I didn't like this because they're now saying that the reason Entreri is still alive as a human after a couple of centuries is because he's bound to this stupid sword. See, Entreri had originally had the evil sword and used it without any problems because he had the control gauntlet. Without it, the sword could control the user instead of visa versa. Then, at some point, there was a cool short story that showed that Entreri was attacked by a Netherese Shade, but defeated him by sucking his life out with the jeweled dagger of his, and in so doing, his visage became grey like the shade and Jarlaxle basically said that he'd gained his powers, including long life. At some later point, a bad guy overpowered Enteri, took the gauntlet for himself, and forced Entreri to use the sword without it, turning him into a weird thrall assassin bound to the sword. After defeating these bozos over the course of a few books, they got the sword back and tossed it into lava because it was so evil, even though Entreri figured it was the only thing keeping him alive after so long, and he assumed he would immediately die. But he lived! I loved this, because I thought it meant that the author hadn't forgotten his own short story! Only now it turns out that it was only because the sword was an artifact and was too powerful to be destroyed by lava. Lame! Story continuity fail! Speaking of which, how lame is the sword's most used power, making a smear of obscuring ash when you wave it in front of you? Why does no-one just back the heck up when that happens? Everyone tries to lunge through it and, spoiler alert, they get stabbed.
I guess Salvatore got tired of having Tiago around, because near the end of the book, they were just like 'Drizz't/Tiago Cage Match!' and Drizz't blew his head off with an arrow from his magic bow. Oh, afterwards, they gave Drizz't Tiago's super sword and shield (which must have looked weird, because he doesn't have a pouch of holding to carry them around in unobtrusively). I do wonder what he'll do with them. Maybe rotate out either Twinkle or Icingdeath to rotate in Vidrinath? It seems weird that everyone but Drizz't regularly uses some kind of instant death blade. Drizz't has Taurmaril the bow, which has always been the 'Chewbacca's Force Awakens Bowcaster' of bows, but when it comes to his swords, he's a 'wear them down with many slight hits' type. Meanwhile Jarlaxle can evidently throw a crazy amount of magic daggers in an instant, Entreri has his jeweled soul destroying instant death artifact dagger as well as now having an instant evisceration artifact sword. Meanwhile Twinkle glows sometimes and Icingdeath gives him fire resistance (and may be a bane vs fire critters or maybe demons - at least when Salvatore remembers).
So, at the end, the new Yvonnel (I wonder if she's a proxy?) uses Drizz't to kill Demogorgon. I didn't like it because it wasn't something Drizz't did for himself, but I think that if I'd played through some of the Fifth Edition adventures I'd actually be pissed at this! See, they've been entwining the books with the adventures. In the last book, there was this whole plot where Lolth tricked Kimmuriel into tricking Gromph into casting a mixed arcane spell/psionic power thingy that ended up summoning Demogorgon and bringing a bevy of other demon lords to the Underdark as well. Honestly, it didn't make a hell of a lot of sense, even from what little I've picked up from Fifth Edition, but then there was an adventure where the Player Characters are sent to deal with the fallout from that. But then to have the most powerful of the demons just be killed in a couple of pages? Sigh. That should be something for the PCs to do!
Then, of course, they leave Drizz't insane at the end of the book, and the main bad guy just lets him go in the hopes that he'll accidentally kill his own wife. That's a pretty evil plan, sure, but other than letting him go, she doesn't do anything to ensure it actually happens. Considering his wife Cattie-brie is a powerful clerical type and a 'chosen', whatever that means in Fifth Edition, and it's been shown that he can't deal a death blow against someone who just looks like her, it's more likely she'll just heal him up.
I do wonder how psionics fit in with Fifth Edition DnD. Salvatore's books have always used psionicists as boogymen, keeping them mostly off screen except for Kimmuriel, and that one illithid/mindflayer (Methis?). He had more at one point, but killed them all off, leaving only a few highish level types out and about. But, now they brought the whole mindflayer hive mind into the mix directly (as well as re-describing the elder brain). Will there be psionics rules in the new edition?
Oh, also, the whole mission is just abandoned. I mean, they were rather soundly defeated, but come on, they could have mentioned it at least!