"Everyone is talking about Billy Sure, the twelve-year-old genius and millionaire inventor whose inventions have become instant hits. Billy's lucky because in addition to being a rich and famous inventor, he already knows what he's best at: inventing, of course! He wants to help other kids figure out what they're best at too, and his latest invention, 'The Best Test' will do just that!"--Amazon.com.

Discovering that he has been exchanging emails with a corporate spy from a rival company, seventh-grade innovator Billy Sure and his best friend set a trap to catch the culprit before he reveals Sure Things, Inc.'s valuable secrets.

Inventor Billy Sure has been trying to perfect an invisibility spray for a long time when another young inventor shows up with his own rival technique for becoming invisible.

Discovering that his scientist mom is really a spy, Billy Sure is enrolled in a spy school where he works on inventions to help her top-secret unit, a challenge that offers him the chance to make a big decision about his future.

When a mysterious new lunch lady's menu begins transforming the students into zombies, Billy Sure races against time to invent something to reverse the outbreak.