Cal has been undercover on Shadow Island investigating the secrets hidden beneath the surface of this would-be tropical paradise. Evading search parties while being spied on by robotic pythons, planning rescue missions, being chased through the forest and sneaking through hidden tunnel systems ...it's now just an average day for Cal. Trapped in the leader's office, how can Cal evade capture and continue his double-act with his twin brother, Ryan? As his enemies increase and the dangers multiply at every turn, at least he knows he can count on SI-6 - or can he? The clock is ticking. Any second could be his last.
