The World Next Door.
Engineered by the mysterious Hypotheticals to support human life, it's connected to Earth by way of the Arch that towers hundreds of miles over the Indian ocean. Humans are colonizing this new world - and, predictably, exploiting its resources, chiefly large deposits of oil in the western deserts of the continent of Equatoria.
Lise Adams is a young woman attempting to uncover the mystery of her father's disappearance ten years ago. Turk Findley is an ex-sailor and sometime drifter. They come together when an infall of cometary dust seeds the planet with tiny Hypothetical machines.
Now Lise, Turk, a Martian woman, and a boy who has been engineered to communicate with the Hypotheticals, are drawn to a place in the desert where this seemingly hospitable world has become suddenly very alien indeed - and the nature of time is being once again twisted by entities unknown.
In this outstanding sequel to Wilson's Hugo-winning Spin (2005), we are taken to the mysterious planet Equatoria, a world apparently engineered for humanity by the inscrutable machine intelligences known as the Hypotheticals. Turk Findley, a man with a criminal past, runs an aeronautical charter service on the newly settled planet. Lise Adams, who hires Turk, is a would-be journalist searching for her vanished father, a scientist obsessed with the Hypotheticals and their illegal life extension technology. Meanwhile, young Isaac, genetically manipulated by rogue scientists so that he may become a conduit between humanity and the AIs, is coming of age, and something enormous and unknown is assembling itself far underground. The various science and thriller plot elements are successful, but this is first and foremost a novel of character. Turk and Lise, who might well be played by Bogart and Bacall, are powerfully drawn protagonists, and their strong presence in the novel makes the wonders provided all the more satisfying. Those unfamiliar with Spin may flounder a bit, but Wilson's fans will be ecstatic.