Beneath the Gated Sky

Blurb

Beneath the Gated Sky is a science-fiction novel by Robert Reed, first published in 1997. It describes a world in which the sky undergoes a transformation that prevents people from seeing the stars, giving them instead a view of the other side of the world, as if the Earth had been turned inside out. The entire universe seems to have been rebuilt by an intelligence so that each body of matter exists in a structure that connects all matter together allowing travel between worlds using "quantum intrusions". The intrusions only allow minds, or as some would maintain, souls to pass through, emerging on the other side as a fully formed member of whatever species exists on the new world.
The novel is a sequel to Beyond the Veil of Stars, and follows that novel's protagonists, Cornell Novak and Porsche Neal, as they deal with their new relationship, the secret activities of the government agency that they worked for, and the possibility that some visitors from other worlds are working to destroy human society so they can take over.