The Mostly Invisible Boy (Casey Grimes)

This "wildly imaginative" (Book Pipeline) "splendid conception" (Kirkus) from upstart author AJ Vanderhorst celebrates the transformative power of courage, tenacity and a little skill with a battle-axe.

Set in an alternate USA where monsters prowl, this debut novel is told from the perspective of mostly-invisible-but-still-hopeful Casey Grimes.

Eleven-year-old Casey is stubbornly friendly, but he's eternally the new kid at Vintage Woods Middle School.

Students look right through him—and they're not faking.

Casey doesn't know why he's mostly-invisible, but when he scales 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.