This book was in many ways similar to Conspiracy Girl. Someone is trying to kill the main character, and she has absolutely no idea why. One thing I really, really love about Sarah Alderson is that she doesn't waste any time. As soon as I started to read the action had already begun. I wanted to carry on reading because everything was going so fast and I needed to know what was going to happen. 
 Olivia and Jaime made a great pairing, they were both very different, but strong in their own ways. I love that instead of Jaime always taking charge because he's the guy, Sarah made Olivia to be a really strong and smart girl. It was often she who had to make decisions and help them both survive. There was clearly chemistry between the two of them, but it wasn't made into too much of a big deal. 
 I wasn't actually expecting what happened in the end at all, so that was really cool. If you've read conspiracy girl and enjoyed it then I'm sure you will like out of control. 
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