As their numbers diminish, the kids of the FAYZ struggle to survive. Food is strictly rationed. Killer worms haunt fruit and vegetable fields. Sam, the 15-year-old mayor of Perdido Beach, has to settle petty disputes among the trapped FAYZ residents. When more kids develop superpowers, Perdido Beach’s population begins to split into Team Mutant and Team Normal. Sam, however, has bigger problems than the town’s splintering. His evil twin brother, Caine, has awakened after three months of delirium, and Caine has big plans to destroy Sam’s town. The breathtaking pace, thrilling action and gruesome monsters of Gone (2008) are back in a big way. Unfortunately, so are the stilted dialogue, the frustration that comes from the author writing much and saying very little and blatant sexism. In one passage, Sam “is struck by” how “good” an 81-pound anorexic girl looks. Sam’s beautiful genius girlfriend, Astrid, only once thinks a negative thought about having to care for her autistic five-year-old brother. Readers who have not read Gone will be lost, thanks to an inadequate recap. Missable. (Science fiction. 12 & up)