Andy McBean and the Lost World (The Amazing Adventures of Andy McBean, #3)

Andy McBean has fought aliens and traveled the Arctic in the Nautilus. Now all he wants to do is go home. But first he must survive the mysterious island the Nautilus' crew calls home. With his friends Hector and Charlie, Andy meets the brilliant Professor Challenger. As they travel across the island to reach a radio and call for help, they learn a terrible secret about this land that time forgot.