Horizon

Horizon - Horizon, Book 1 (Unabridged)

Scott Westerfeld

Deadzone - Horizon, Book 2 (Unabridged)

Jennifer A. Nielsen

A Warp in Time - Horizon, Book 3 (Unabridged)

Jude Watson

Apex Predator - Horizon, Book 4 (Unabridged)

M.T. Anderson