Only the Good Spy Young by Ally Carter

When Cammie Morgan enrolled at the Gallagher Academy, she knew she was preparing for the dangerous life of a spy. What she didn’t know was that the serious, real-life danger would start during her junior year of high school. But that’s exactly what happened two months ago when Cammie faced off against an ancient terrorist organization dead set on kidnapping her.
Now the danger follows her everywhere, and even Cammie “The Chameleon” can’t hide. When a terrifying encounter in London reveals that one of her most-trusted allies is actually a rogue double-agent, Cammie no longer knows if she can trust her classmates, her teachers—or even her own heart.
In this fourth installment of the New York Times best-selling series, the Gallagher Girls must hack, spy, steal, and lie their way to the truth.as they go searching for answers, recognizing that the key to Cammie’s future may lie deep in the past.
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This series has come to be one of my favorites. Spy books aren't all that common in YA so consider turning to this one if you're looking for something different and unique. Only the Good Spy Young is the fourth installment in the series, as well as the darkest one.

This one by far contains the most action, danger, and near-death situations. The main character, Cammie, and her friends never know who they can trust and they frequently come up with more questions than answers. The evil organization the Circle of Cavan is still after Cammie and she doesn't know why. The first few books in the series are certainly more lighthearted than this latest addition. The older, wiser, and more experienced Cammie gets, the more trouble she gets into. Her definition of trouble, however, isn't really on par with that of a typical teenage girls. For Cammie, trouble equals life or death situations. Failure may well mean people die. I think, for me, this is a lot of the appeal. What she goes through is on such a huge scale that it's thrilling to read.

I want to be semi-fangirly for a second and talk about Zach, Cammie's love interest. He's cute, mysterious, and she doesn't have to hide her spy status from him because he's one too. How much more could you ask for? I really hope we get some more information about him in the next book, though. I mean, there is such a thing as too much mystery. We know next to nothing about him, which when he was first introduced worked but now I can't take much more of this being in the dark. Overall, if that's the only problem I had with the novel, I'd say that it's still excellent and worth being added to your to-be-read pile.

4/5

Image and synopsis from bn.com