I picked up Spy School: British Invasion by Stuart Gibbs because it looked clever and witty, which it
is. I didn't notice "A Spy School Novel" at the bottom of the cover, or I would have realized this book is part of a series.
In fact, it's part of a serial. British Invasion begins with the end of one espionage operation as it sort of bleeds into another. The book ends with an escape that, while it does have some closure, leaves things up in the air. Literally.
For all that, the book is still readable and enjoyable. But it would have been even more so if I'd read the seven books that came before it and knew all the characters' back stories. Since it is the seventh book, it has great binge potential. In fact, there is a boxed set.
This book reminded me some of the Artemis Fowl books. It's an over-the-top thriller with humor. No fairies, though.