Hide 4: Coherence - The HIDE Series, #4

THIS IS EPISODE 4 IN THE FIVE BOOK SERIES A ride from a stranger turns into a lucky event as Keegan heads to Sedona to find out why Lizzy sent him there. In an Internet café, Keegan uncovers more bizarre facts about his strange new home of Sedonia Falls that suddenly puts the safety of Lizzy and his father into question. During his trek back to rescue them, a dark walk through the desert reveals a scary incident with Simon James and a busload of unwilling travelers.
His worry increases when Lizzy is missing and no one at school seems willing to help him. The clues start to add up, and Keegan can no longer blame his memory or a runaway imagination for what he's beginning to suspect. But, the biggest revelation comes when Lizzy lures Keegan to a safe place to reveal the truth about what is really happening in this creepy little town.