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A scientist and a pilot's daughter investigate a top-secret computer program that can control any plane in the sky in this spine-tingling thriller from New York Times-bestselling author John J. Nance For eighteen months, Dr. Ben Cole has worked to develop Skyhook, a highly advanced autopilot that can direct aircraft from the ground. On the first test run, something goes wrong over the Gulf of Alaska plunging Cole's plane toward a supertanker at maximum speed. But moments before impact, the computer switches off, saving his life. Seeking answers, Cole joins forces with April Rosen, whose pilot father narrowly missed his own midair collision over the same waters where Skyhook was tested. Unraveling the mystery of these near-disasters pits Cole and Rosen against shadowy forces within the Pentagon who will go to dangerous lengths to keep the public from discovering the true purpose-and the real dangers-of Skyhook.