I recently finished reading The Dead by Charlie Higson. The sequel to The Enemy, this takes place in London a month after the disease started. It follows a group of boys at their school, eventually heading into London. They meet new people and learn new things about the disease, giving us, the reader, a lot more information, making everything a lot clearer.
I found this book a lot better than the first one. I liked that we learn a bit about how the disease works, and there are things that connect with the first book.
The first book was enjoyable, but this book really drew me into the series. I think that this will be a new favorite.