When a Stanford University physicist is kidnapped and whisked away to a top-secret research facility near Moscow, he finds that a Russian oligarch has developed

"Seventy years after Tesla's death, the plans for a death ray fall into the hands of a centuries-old conspiracy bent on world domination. Powerful men will stop

After foiling a gang of kidnappers and fending off an army of robots, 11-year-old siblings Nick and Tesla Holt could use a little rest! But as their third myste

Nick and Tesla are bright 11-year-old siblings with a knack for science, electronics, and getting into trouble. When their parents mysteriously vanish, they’r

“The story of one of the most prolific, independent, and iconoclastic inventors of this century…fascinating.”—Scientific American Nikola Tesla (1856-194