[This review was written without reading the perquisite Caraval books.]
Not my cup of tea, but from an objective standpoint I can tell how well-written it is. I adored the worldbuilding and the Magnificent North, but Evangeline tends to think in repetitive sentences whicu got tiring quick 🥲
The starting was meh for me (rofan veteran readers may think differently; I don't usually read this genre), but it picked up later with the mystery. Would've brought this up to 4 stars if not for some situations I thought were overly possessive in terms of interactions (

Jacks nipping Evangeline's ear and gripping her by the waist even though she was uncomfortable 😭 He didn't have to go that far

) which I believe were unnecessary. 

I don't know how I feel about Jacks potentially being Evangeline's love interest. He's done a lot of terrible things to her so far, and lemme just say that it'll take an out-of-this-world redemption arc to get me to be on-board with that. Whenever I think I'm starting to like Jacks, he turns around and pulls a new stunt :') I have faith in Stephanie Garber, though, because I can tell she's a good writer + my friend who's read the Caraval series vouches for her ability to do that haha

Also, this book is just a walking amatonormative theme, which was off-putting especially because I'm demiromantic 🥲
Conclusion: I think I'd be better off with Caraval tbh