The Mostly Invisible Boy, Casey Grimes #1 (Paperback)

  A hidden world. A dangerous secret. A kid no one sees—until monsters do. Perfect for readers who love: Hidden worlds and secret schools Monsters, mystery, and fast-paced adventure Books that hook reluctant readers and reward confident ones 📘 Book 1 of the Casey Grimes AdventuresAges 9–12 (confident readers up to 14) Being invisible sounds cool…until no one saves you a seat at lunch. Casey Grimes isn’t just ignored. He’s actually invisible. Kids walk into him. Teachers forget he exists.It might almost be funny—if it wasn’t his real life. Then Casey climbs a giant oak tree and discovers something impossible:a hidden fortress, a monster-haunted wilderness, and kids who treat battling beasts like gym class. Suddenly, he’s not just the weird invisible kid.He’s a kid who might accidentally die. This is a monster-hunting academy—and America’s suburbs are the battleground. Good news? Casey’s tough, funny, and hard to kill.Bad news? Everyone else is, too. With his fearless little sister,