Pretty much just a continuation of [b:The Long Earth|13147230|The Long Earth (The Long Earth #1)|Terry Pratchett|https://d.gr-assets.com/books/1335532694s/13147230.jpg|18164154], though I liked it that little bit better. Not much of a war, but Pratchett and Baxter do a slow build of foreboding very well. Very fun to read.