IMPLAC

Decades after a war against genocidal self-aware machines, schools, churches and government are all insisting that none of the sadistic implacs (implacable robots) had survived, but Tommy McPherson is skeptical. When he hears about a unnatural looking tunnel on the moon, he knows the time had come to face his most terrifying nightmares. With the aid of a friend, Murray, he enters the tunnel and manages to capture a lone robot. It admits its original intention to emerge at a future date, copy itself, and fight humans, but says a random circuit change deleted its hatred of people. It adds that other robots lay in wait to emerge, copy themselves, and resume the war. It can find those other implacs, but only if it is freed.

Should Tommy release it? Though vicious and sadistic, the robots had never been known to lie. In this society, Tommy can't ask the authorities for help. If he wrongly believes the implac, it will escape, resume the war, and destroy humanity. If he thinks it’s lying when it’s telling the truth, other implacs will escape - and destroy humanity.

Tommy travels between Venus, Earth and Luna, fights stubborn and sometimes lethal bureaucracies, and finds his true love before making this fateful decision.
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