America's future depends on Casey. Too bad he's got an itty bitty invisibility problem. At Vintage Woods Middle School, he's always the new kid. Students look right through him-and they're not faking.

Casey Grimes doesn't know why he's mostly-invisible, but when he climbs a colossal oak, he discovers a fortress in its branches. The forgotten sentry tree marks the border between his safe, suburban life and a fierce frontier.

Casey and his little sister Gloria discover an alternate USA where monsters stalk the suburbs, forgotten magic waits in the woods, and battles are as common as breakfast. No wonder Casey-and anyone who reads about him-will want to belong.

Highly-rated for read-alouds, this fast-paced fantasy adventure series is bringing parents, grands and kids together, but watch out for treachery-grown-ups have been known to steal the books and read ahead.