Stowaway Jack and the Bottomless Pit

Jack Buck, a fifteen-year-old from Northwest Florida, is an average-looking guy with brown eyes, little bulb of a nose, strong eyebrows, his face topped with wavy dark brown hair, worn kind of long. His life is anything but average. A year ago, his father disappeared, and now his mother has died, leaving Jack and his sister Annie as orphans.

Following clues left in a series of cryptic letters, Jack...