Robert H. Harris

When 10-year-old Timmie goes to his father's laboratory, he finds a robot named Robbie. The two bond instantly, but when Robbie falls under the influence of a demonic supercomputer, only young Timmie can save the Earth from nuclear destruction.

Giving up his rebellious ways to wear a sheriff's badge, Sam Walker faces Apache trouble as well as a cunning thief who is plotting to rob a stagecoach carrying gold.