This book actually gets 3 1/2 stars. It was good. Action packed. The mystery was solid (as in, I didn't see the solution coming until the author wanted me to), and there was even a nice twist at the end. It was just very juvenile. Now, I know what you are thinking... "Well, of course it's juvenile. It's a 'teen' book." Yes, that's true. But it was more juvenile than your usual teen book. Honestly, if not for the cursing and occasional reference to teen drinking, I would place it squarely in the 9-12 area at the book store. Yes, it's a murder mystery, but not graphic in nature. 
 All of that said, it was a good book. I enjoyed it. Would a read a sequel? Maybe, but probably not, but I'm an adult. Kids would eat this up. Especially those that have a head for science and mystery (the geneticist in my found that aspect most exciting). I would say this book would be AWESOME for a 10-15 year old.