hill and finds Zach there. She tells him that she had thought the woman was the woman from Boston and Zach shakes his head and tells her that Joe Solomon would never be with her, then Cammie asks him why Mr. Solomon would walk right into a trap, and he tells her that Mr. Solomon would do anything to keep her safe. He kisses her forehead and runs off. Three weeks later, the girls are ready to get the journal. They work their way through Sublevel Two, with some difficulty, but finally get to the place the book is supposed to be. While Liz is hoisted up to get the book, Cammie and the other roommates become aware that there is someone else trying to break in. They assume it is Agent Townsend (we later learn it was Rachel Morgan), and get out as soon as possible. The book was written in code but the girls find the key, which was the Pigeon Code they had found in the pigeon carrier room. It turns out that the journal belonged to Cammie's father, Matthew Morgan. The journal explains how Matthew Morgan and Joe Solomon tried to bring down the Circle of Cavan. Operative Morgan went missing on the way to Greece. Solomon blames himself because that was supposed to be his mission, and felt it should have been him. A couple nights later Zach sneaks into Cammie's room and wakes her up. They take a walk and she asks him why the Circle would break Joe Solomon out of a CIA prison if he was working against them. Zach responds saying, "They weren't doing him a favor". Cammie demands more answers, but Zach will not give her any. Her furious roommates show up and try to get answers from him, too. Cammie suggests a plan to go get the other notebook, the one that Joe Solomon wrote, from Blackthorne. Then, Cammie's mother arrives, and she says she will help them. While in the car, Zach tries to talk to Cammie, but she ignores him. They pull over the van, and we learn that Bex's parents and Aunt Abby are there to protect Cammie. From there, the girls and Zach walk to Blackthorne.Cammie finds out that it was her mother who had tried to get the journal. They had heard her. After going through its various defenses, they learn Blackthorne's cover: it's