We’ve gotten to see Cammie grow up, but this is the book where I could really tell that she’s growing up. There are a few things that I wished would have been flushed out more, such as more information from when Cammie had amnesia etc., but overall, there was nothing completely glaring that stood out. I love how characters from the first half of the series were intertwined in the second half in ways that I was not expecting at all.

We get to see pretty much all of our favorite characters in this book, and there are a lot of twists and turns. This series made me wish that I could be a spy too, but my aversion to conflict and lack of athletic skills say otherwise. I loved getting to live inside Cammie’s world for a while, and I would love to read a series that follows Cammie and Zach in their late teens and their twenties. “United We Spy” is a thrilling conclusion to a beloved series. Get ready for the Gallagher Girls’ most astounding adventure yet as the series comes to breathtaking conclusion that will have readers racing to the last page. Now the spy girls and Zach must track down the Circle’s elite members to stop them before they implement a master plan that will change Cammie-and her country-forever. Cammie and her friends finally know why the terrorist organization called the Circle of Cavan has been hunting her. Cammie Morgan has lost her father and her memory, but in the heart-pounding conclusion to the best-selling Gallagher Girls series, she finds her greatest mission yet.

United We Spy by Ally Carter