OMG! I LOVE THIS BOOK! I read this before I read Life as We Knew it but I read that shortly after. THIS BOOK IS SO GOOD! I couldn't put it down! Page after page I felt the drama, suspense, and fear! I actually cried at the end. Oh my god its such a good book! Some people can relate to them because they are just your average kids. A very well written book to sum it up. I LOVE it! This is my favorite series and I really want to buy the 3rd book! If you LOVE sci-fi, drama, adventure, suspense and tragedy, you will just fall in love with this book. I wasn't too crazy about sci-fi but this is my favorite book by far!!!