So very peculiar. There were points in the plot where my inner cringe cop was saying this is stupid, but it didn't really matter? By that point the novel was pulling me along so breathlessly it was like yes, and so what?
I've seen it called a love letter to London a few times and that is absolutely spot on. This book made me miss it viscerally.
 
A bit confused at to whether this is a two parter or just an open ended novel. I assumed the former, but other reviews are treating it like the latter.