If you haven't tried these books yet-- Aiden and Meg Falconer are suffering the consequences of their parents' supposed crime-- treason against the United States government. Aiden and Meg set out to find evidence of their parents' innocence, evidence that even the FBI couldn't uncover.
If you like fast-paced, high-excitement books, I would recommend this series. I am two books away from finishing, and I can't wait to see how it ends!