Lost Island by Preston Douglas Child Lincoln
Gideon Crew - brilliant scientist master thief - is living on borrowed time. When he's handed an eyebrow-raising mission by his mysterious employer Gideon has no reason to refuse. His task? To steal a page from the priceless Book of Kells now on display in New York City protected by unbreakable security. Accomplishing the impossible Gideon steals the parchment - only to learn that hidden beneath the gorgeously illuminated image is a treasure map dating back to the time of the ancient Greeks treasure that could perhaps save Gideon's life.