The dazzling new science fiction adventure from the extraordinary imaginations of Terry Pratchett and Stephen Baxter -- the fourth novel in a collaborative series that has been hailed as sense-of-wonder SF at its best. --Independent on Sunday. 2045-2059. After the cataclysmic upheavals of Step Day and the Yellowstone eruption humanity is spreading further into the Long Earth, and society, on a battered Datum Earth and beyond, continues to evolve. Now an elderly and cantankerous AI, Lobsang lives in disguise with Agnes in an exotic, far-distant world. Hes convinced theyre leading a normal life in New Springfield -- they even adopt a child -- but it seems they have been guided there for a reason. As rumours of strange sightings and hauntings proliferate, it becomes clear that something is very awry with this particular world.