"The Masked Man possesses a powerful magic potion that turns every book it touches into a portal, and he is recruiting an army of literature's greatest villains! So begins a race through the magical Land of Oz, the fantastical world of Neverland, the madness of Wonderland, and beyond. Can twins Alex and Conner catch up to the Masked Man?"--
Some of the ideas in the book are interesting, so it is a shame that they (along with the characters) are very badly developed and that the writing never improves in the course of all the books.
The plot setup and backstory stuff we get here is pretty ridiculous and contrived, even by kids' book standards, and like the previous volumes, this one is slow to really get going. But once it does, it's a lot of fun. Watching our now-familiar characters interacting with a whole new series of fictional acquaintances is a hoot, and had me laughing out loud several times.
Unlike the earlier books in the series, this one doesn't even remotely pretend to have a self-contained plot, and instead ends on about five different cliffhangers. Guess I'll have to get to the next one soon!