3.5 - 3.75 stars.
Just as twisty and traumatic as the first time I read it, though I understood some things better now that I'm older. Fast-paced and packed with mystery and adrenaline, it was definitely not a tedious or slow thing to read, even my second time round; I still felt that same anxiety and confusion our main character did. Now in 2025, though, some things in the writing have not aged the best.
Maybe it's just a me thing, but at time I wish some of the context of the alternate London were described in more detail, particularly the clothes/fashion style and architecture. Not that they weren't described or that I had no idea of how they looked, I just think more detail in some places could have really heightened the immersion in the other world, and also just made it feel more tangible and imagine-able. I also wish some of the world-building and history of the other world, beyond just the other London, were explained/fleshed out in more depth, beyond oblique mentions or in contexts specific to London. Like, I wanted to know more about the history of foreign brands mentioned and how society (politics, fashion, etc.) worked in other places in the world too, beyond just names or inferences based on them. Especially since this is a universe in which neither of the World Wars have happened; that world bistory especially behind brands and stuff would be very interesting to get into in more depth. But I understand this is also meant to focus on our main character's journey and experiences (many of hardship) in the other world, her personal perspective and emotions, rather than just be a description of a possible different place. In this, the book did well - I wouldn't say the MC waz exactly relatable all the time, but I did like that she's flawed, that she doesn't know what she's doing most of the time (understandable in a completely different universe) but admits it and tries her best, yet is also aware that some of her choices may not have the the best (most helpful) outcome, while also very much having a "teen in the 2000s" point of view. Even though she wasn't "just like me", she was easy to empathise with. And in this way, I think the book does sorr of bring focus to certain social and political issues such as universal suffrage and human rights to young audiences, while also maintaining the emotions and high stakes. The fast pace and presence of Jessica's perspective also gives the writing itself that youthful, imperfect (in a good way) feel too so it felt like a real person's (particularly a 2000s British teen's) experiences. Idk if that makes sense, but I felt that.
Overall an interesting read, if not always pleasant (in terms of what our main character had to go though). However, I think this book, along with the tv series 'Fringe' was formative in my tween/teen fascination with the concept of multiverses, and the existence of alternate versions of everyone and everything and every history in each of them, so it was an oddly nostalgic experience to read it again.