The unexplained real-life phenomenon of the Marfa, Tex., lights in the sky provides the inspiration for this patchwork thriller from bestseller Morrell (First Blood
), who plays with possible theories to account for the mysterious lights—the shimmer of the title—as well as the various reactions people have had to them since as far back as WWI. When Tori Page, wife of Santa Fe cop Dan Page, unexpectedly turns up in the small west Texas town of Rostov, the book's stand-in for Marfa, Dan flies to Rostov, where he winds up trying to understand the lights' powerful effects. Some can't see the lights, some feel they can produce miracles and some viewers turn homicidal. Still others hope to harness the power of the lights for military uses. A massacre, secret government installations and experiments and Page's investigative efforts fail to coalesce into the kind of riveting suspense that has been Morrell's hallmark. 10-city author tour. (July)