When a missing surfboard proves to have hidden depths, twelve-year-old super-sleuth Steve Brixton must go undercover—and underwater—to tackle a puzzling tangle of mysteries.

Steve Brixton’s finally gotten a hang of this super-sleuth thing. After a few months of busting bad guys he finally has his own office—even if it’s a bit small, and outside, and okay, used to be a doghouse.

So when someone asks him to help track down a board stolen by a local surf gang, it’s just a matter of slipping into a neon wetsuit and blending in with the surfers—right?

But when the assignment goes all wrong, Steve is going to have to test his wits against pirate smugglers, thick-necked goons, and a sixth-grader who just wants his gym shorts back—all with the help of the tips and tricks he learned from his beloved Bailey Brothers books, of course!