Book Description
for Missing by Gabrielle Lord
From the Publisher
Cal is undercover on Shadow Island, investigating the secrets hidden beneath the surface of this tropical paradise. Evading search parties, planning rescue missions and sneaking through a maze of hidden tunnels is now an average day for Cal.Ryan has disappeared and Cal's suspicions are raised when he receives a cryptic message: 90 days. Cal agrees to work as an undercover agent for SI-6 to discover the whereabouts of his twin. But at an island getaway for troubled teens, Cal has to face his most heart-stopping challenges yet. He has 90 days.The clock is ticking.
Publisher description retrieved from Google Books.