One man holds the key to freeing Aiden and Meg Falconer's parents from prison: a mysterious figure named Frank Lindenauer. Aiden and Meg must cross the country to try to catch him ... even as the FBI tries to catch them first.
In California, Aiden and Meg fall in with a crowd that already has its share of trouble. They want to believe they've found friends who will help them out. But if they're not careful, these "friends" will sell them out instead.
... If you can.
(From the Mystery Stories shelf.)