The most exciting part in the story so far is, when they break free from the lab and take Anna with them. Because her dad said not to leave her there. And he told her to promise to never come back. So she agreed to disappear with the 4 boys and never return. After she had realized what she got herself into she was having second thoughts but she decided to go through with it and stay with the boys to make sure she stayed safe. In this part of the book there was a lot of excitement and killing.