The novel “The Long Cosmos” by Terry Pratchett and Stephen Baxter was published for the first time in 2016. It’s the fifth book of The Long Earth series and follows “The Long Utopia”.

In 2070, humanity is fragmented into many groups, large and small, scattered over a lot of parallel Earths. However, all over the Long Earth comes a message which, through various means, says “Join us” and is addressed to all sentient beings. Encoded, there’s a much more sophisticated message that contains a huge blueprint that could change the Long Earth.

Joshua Valienté is on one of his solitary journeys but ends up in a situation that could cost him his life. He gets rescued by a group of trolls but the complications don’t end for him and on the contrary, extend to his son Rod.