In the alternative world of the American Union, everyone gets a Mark on their thirteenth birthday so they can get jobs, pay for things, and become full citizens. Since his sister passed away during her procedure, Logan Langley has been nervous. As his thirteenth birthday approaches, he becomes more paranoid that he is being followed. When the new girl, Erin, tells him that her father is investigating Markless teenage criminals and Logan receives a flaming note in his bedroom, he is the most unlikely secret agent ever.
It isn't perfect: at one point Logan recaps everything that happened thus far, and the whole novel could benefit from editing. Also, the cover and even the general feeling of the book are reminiscent of Neal Schusterman's UNWIND. Still, these minor quibbles don't detract from how much I enjoyed SWIPE.
The alternative world of the American Union is interesting and well-developed.