The Long Earth

I've just finished the latest Terry Pratchett novel "The Long Earth" written in collaboration with scifi author Stephen Baxter, it's a very imaginative story yet ultimately a simple premise but done with a huge amount of flare and style. While there is a narrative that could lead to a second book I think this novel pretty much stands alone although the "b" plot is a little under developed compared to the main story yet despite that it's so very human in terms of the events which take place.