It all started when Jack McKinley was defending a kid from the school bully, then he blacked out and was on hospital on a tropical island. He soon meets three other teens: Aly, a pink-haired computer whiz; Cass, who is terrified of heights, but has an amazing photographic memory; and Marco, a super-athlete. It was told that all four of them shared a same dream in mysterious organization called K.I. set on an secret deserted island where no one knows. And these kids have all got one thing in common: they’re about to die. Each one of them possesses the G7W genetic marker, which was told to allow some kind of superhero potential. Although, it also causes illness that will kill each teen before the age of 14 unless an ancient mystery can be resolved. I really liked this book because the book is full of mysteries and the author Peter Lerangis always keeps you guessing what will happen next.