"In April 2013, fifty-year-old Brett Archibald set off with his friends on a dream surf charter trip off the Mentawai Islands of Indonesia. It quickly became a nightmare: in the middle of a storm, suffering from severe food poisoning, Brett leaned overboard--and blacked out. He awoke in the raging sea. No one had seen him fall, and no one heard his shouts for help. He watched his boat sail away. It would be eight hours before his friends realized...