VERY GOOD.
FROM THIS POINT, THERE ARE SPOILERS!!!!!
Staurt Gibbs did this book well. Although SSR (Spy School Revolution) is a smidge better, it is my second favorite book in the whole entire series. hen Ms. E took Ben's parents in hostage, I was literally biting my nails. Stuart Gibbs had some great ideas in this book too. Like, at the last few chapters, there was still more action. I also liked the 3v3 on the Eiffel Tower, and I was also suprised that Catherine beat Dane. I also liked how Spy School goes South was right before Spy School British Invasion. Like, literally, SSBI started right after the golf cart chase with Josh and Dane. Another thing I really liked about SSBI was the mild Romance. But, I usally hate Romance. Stuart Gibbs on the other hand, executed it real good. I liked how Ben started realizing that Zoe was a really good friend( and maybe something more...) and that he made a mistake of not paying more attention to Zoe(Because, after all Zoe is like my favorite character!).