When seventeen-year-old Cammie wakes up in a convent high in the Alps, she slowly comes to realize that she's been tortured, the last four months have been erased from her mind, and an ancient terrorist organization is hunting for her.

Cammie Morgan is a CIA legacy and attends the premier school in the world ... for spies. The school hosts some mysterious guests with the code name Blackthorne. When Cammie is blamed for a security breach that threatens to expose the school's top secret status, she and her friends face danger to clear Cammie's name and learn the truth about Blackthorne.

When danger follows Cammie "The Chameleon" Morgan to London, she must again face off with the Circle of Cavan to find the rogue operative who may have infiltrated the halls of the Gallagher Academy for Exceptional Young Women.

As Phoebe and her clique of privileged girlfriends get ready to graduate from eighth grade, a financial scandal threatens her family's security--as well as Phoebe's social status--but ultimately it teaches her the real meaning of friendship.

When Kate Bailey lets her best friend, Alana, talk her into joining their high school's podcast she did not expect to find herself as the host, or to enjoy answering calls and giving advice on the air, but she is actually pretty good at it--but when she gets an anonymous call from a boy (possibly Diego Martinez) about his secret feelings for a girl (probably Alana) she is faced with a problem, because she is developing feelings for Diego herself.

When Paige Turner and her family move to New York City from rural Virginia, she tries to make sense of her new life through her sketchbook, and it helps bring her true personality into the open, a process that is equal parts terrifying and rewarding.

Sophomore Frankie starts dating senior Matthew Livingston, but when he refuses to talk about the all-male secret society that he and his friends belong to, Frankie infiltrates the society in order to enliven their mediocre pranks.

As her senior year of high school starts, Laurel is just beginning to adjust to Tamani's absence when he suddenly reappears, telling her he must guard her against the returning threat of the trolls that pose a danger to her and to Avalon.

Delia's mother is declared dead when her ship disappears on the way to Antarctica, but when Delia arrives in New York to live with an aunt she has never met, she begins trying to figure out what really happened to her mother.

Travis is missing his old home in the country, and he's missing his old hound, Rosco. Now there's just the cramped place he shares with his well-meaning but alcoholic grandpa, a new school, and the dreaded routine of passing when he's called on to read out loud. But that's before Travis meets Mr. McQueen, who doesn't take "pass" for an answer--a rare teacher whose savvy persistence has Travis slowly unlocking a book on the natural world. And it's...