Only the Good Spy Young is a 2010 young-adult fiction novel by Ally Carter, and the sequel to Don't Judge a Girl by Her Cover. It is the fourth book in the Gallagher Girls series. The book was released on July 29, 2010, but the title had been announced and the cover released on December 25, 2009. Ally Carter posted "mini excerpts" of the book on her website in the lead-up to the release. Plot For earlier events, see: Don't Judge a Girl by Her Cover. The story starts with student Cammie (Cameron Ann Morgan), still enrolled at Gallagher Academy, already in London with Bex (Rebecca Baxter) and her parents (Grace and Abraham Baxter). Cammie now has strict and very serious security surrounding her because the Circle of Cavan, a terrorist group, is after her. While at an ice skating rink, she talks briefly with Zach, and he asks her if she has seen Joe Solomon, and Cammie replied to him that "being out of the loop isn't fun is it?" meaning that now Zach understands what it's like to not be on a need-to-know basis. After Zach leaves, the lights go out, and Cammie is grabbed by Mr. Solomon, who tells her to run. They end up on the Tower Bridge, where Bex's parents reveal that Mr. Solomon was the threat. She demands answers but he only makes her promise to "follow the pigeons" before jumping off the bridge and escaping. She is interrogated two hours later by an MI6 agent (who is later revealed to be Agent Edward Townsend) and is released. While in a MI6 safe house with Bex's family, her Aunt Abby comes to visit. Cammie is appalled and upset that her mother did not come to comfort her, yet suspicious that she is there. After she and Bex eavesdrop on part of the conversation between the Baxters and Aunt Abby(Cammie listening from the dumbwaiter), they confront the adults about when Abby was saying "Cammie can never know-"., so Abby tells her with a trembling voice, that Joe Solomon has been a member of the Circle of Cavan since he was sixteen, and Cammie simply not believing it to be true, but Abby begs her that she of all people needs to believe it. The girls return to the Gallagher Academy, but things have changed. All of the secret passageways (except one leading to the kitchen)