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Mostly Invisible Boy

An alternate USA where monsters prowl. Secret forest societies. Forgotten magic.

A monster-control academy where battles are as common as breakfast.

And that's just getting started.

Casey Grimes is invisible. Really. But that—along with a whole lotta other things—is about to change.

Monster-control classes begin for Casey & Gloria, but there's one little problem: A secret enemy who's playing for keeps.