A sharp allegorical novel about a hidden human civilization, a crucial election, and a mysterious invisible force that must not be named, by one of our most imaginative comic novelists When sociologist Nalini Jackson joins the SS Delany for the first manned mission to Jupiter, all she wants is a career opportunity: the chance to conduct the first field study of group dynamics on long-haul cryoships. But what she discovers instead is an entire city encased in a bubble on Europa, Jupiter's largest moon. Even more unexpected, Nalini and the rest of the crew soon find themselves abducted and joining its captive population, forced to start new lives in a place called New Roanoke.