Billy Sure, twelve-year-old inventor and CEO of Sure Things, Inc., has come up with another zany invention that tells you what you’re best at in the fourth book of a hilarious middle grade series!<br><br>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!<br><br>But when Billy takes the test himself and the results come back saying he isn’t the best at inventing, and what he’s best at has<i>nothing</i> to do with inventing at all, he begins to wonder who is. And what that means for the future of Sure Things, Inc.