Police Detective Del Spooner's investigation into the murder of Dr. Alfred Lanning, who works at U.S. Robotics, in which a robot, Sonny , appears to be implicated, even though that would mean the robot had violated the Three Laws of Robotics, which is apparently impossible. It seems impossible because.. if robots can break those laws, there's nothing to stop them from taking over the world, as humans have grown to become completely dependent upon their robots. Or maybe... they already have? Aiding Spooner in his investigation is a psychologist, Dr. Susan Calvin, who specializes in the psyches of robots.

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s, swiftly writes a long string of numbers. In 2009, the capsule is opened; student Caleb Koestler gets Lucinda's "drawing" and his father John, an astrophysicist and grieving widower, takes a look. He discovers dates of disasters over the past 50 years with the number who died. Three dates remain, all coming soon. He investigates, learns of Lucinda, and looks for her family. He fears for his son, who's started to hear voices and who is visited by a silent stranger who shows him a vision of fire and destruction. What's going on?

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eaceful and prosperous empire into chaos and conflict.

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