I enjoyed the concept of 3 best friends in the first three books. I gave this book 3 stars because harmless flirting has turned into more between friends and I feel that the story has enough substance without adding the drama of boyfriend and girlfriend.
In Outlive, Jack is kidnapped by UFO'S. A giant man comes out of nowhere to help Casey and Mike. The adventures become increasingly dangerous and the teens have to work as a team to save each other from near death. New, strange creatures are introduced and the goal is to save Jack. Orthron has promised the teens entrance to the city and an introduction to the General who can help with their problems.