Eleven-year-old Casey Grimes is stubbornly friendly, but the students at middle school 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. The forgotten sentry tree marks the border between his safe, suburban life and a fierce frontier.
Casey Grimes Series
This series follows the adventures of a young boy who often feels overlooked by those around him. His life takes an extraordinary turn when he discovers hidden realms and secrets that pull him into perilous yet fascinating situations. Readers will find stories of courage, friendship, and finding one's place in the world. It's an engaging read full of fantasy and suspense for young adventurers.
