Our Dark Duet starts few times after This Savage Song, showing a world quite different from the one that the readers left, mostly because is burning in pure chaos. Where Kate is hiding from herself and her fear in another city, still battling monsters, August is doing the same but in Verity. 
 The whole novel is balanced between Kate and August, their own interior struggles and how the events of This Savage Song now influence their way to act. 
 Starting from the place where Our Dark Duet takes place, I've not so much to say. I've never been a city or urban setting lover, so the city of Verity left me quite unimpressed. Yet, it's a perfect scenery for what happened in the book because I could feel the total misery that ran trought the streets. 
 My most delicate part screamed a lot looking how the men and women in this novel didn't fought against the bad of the city on a moral level. They were all like: I do as ordered. Just no. Sorry, I cannot take this one, neither I cannot take the way how it was mildly unchallenged. August show moral fights inside himself but no one ever tried to say: maybe we're losing focus. 
 That's another point that made me love and hate this novel: August. I just... did I hate him? For a period I did. Did I want to punch him? OMG YES. His phase of "I'm Wonder Dude" and "A real man is a tormented alpha"... Do you know how it was? Nerve wrecking 
 I had an up and down relationship with all the other characters. One of the new ones - which in my opinions is really important - is Soro. I don't want to say much about Soro but the fact that get so little screen and is not even a pleasant person... it was just "meh" for me. 
 Same thing for the bad guys. I needed more. Is Sloan a pervert or is obsession with Kate is a Harker's side effect? How Alice and Sloan really relate to each other? 
 And the new enemy? Yes, the concept of it is cool but yet it remains a strange villain for only one book. The last book. 
 THE ROMANCE. Why? Why, Schwab? Because it's not YA if there's no romance? This book one of the few with a focus on friendship, bu no, THERE MUST BE ROMANCE. Sorry, I'm pissed. It was a huge delusion. 
 Our Dark Duet isn't the glorious sequel I was waiting for. My opinion in two cents: if the author was going to focus a little more onto other parts - NO ROMANCE PLEASE - working on the bond between Kate and August - that is really good, by the way. I love you, Kate - I might have slipped about all the point cited above. 
 In the end, a the same time, I cannot really say that I hated this one. Monsters of Verity will always be one of my favorite duology, but I still think that many things are missing from this one and didn't stand the beautiful first novel.