内容简介：
Alisa and Leah yearn to visit Seattle during summer vacation, but their parents have other plans. The girls decide to go anyway, choosing to ride on Amtrak. While waiting for the train, they notice a mysterious man who keeps appearing as they travel to Seattle. When they come face to face with him, they realize he is indeed following them In the girlsa minds, they are not runawaysathey are on a secret Amtrak vacation and they canat go to the authorities for help. Will they successfully evade this mystery man? What does he want? Why is he following them?