Eighth-grader Hannah Carlisle feels unattractive compared to her movie star parents and cliquish Beverly Hills classmates, and when her mother's cancer worsens and her father starts drinking heavily, Hannah's grief and anger turn into bulimia, which only her aunt, a documentary filmmaker, understands.

Marley Sandelski has always felt invisible at school when he is not facing bullies, but a series of unexpected events gives him a taste of popularity and insights into some classmates, well-liked or greatly-feared.

Paired with the infamous "Hot Dog" Helen for a health class presentation on safe sex, tenth-grader Coop tries to regain his "cool" by entering his musically challenged rock group in the "Battle of the Bands" competition.

As seventeen-year-old Celeste seeks a cure for her werewolf-boyfriend, Brandon, Legend's Run's highly-anticipated Moonlight Ball is approaching, and Celeste must decide if she is willing to risk attending with Brandon and possibly revealing his secret to the entire school when the moon appears.

Rachel Lee has looked forward to relaxing for two weeks at a Florida resort with her father, but when his girlfriend asks her to help in a cafe, Rachel adopts a "cool" new persona, Ava, to fit in with her older co-workers, until they ask her to help with their Gossip File.

Fresh off their epic summer road trip, Lydia and Julie are back and ready to take seventh grade by storm. Well, Lydia is: She wants to start a band, and she’s convinced Julie to join her. The Macramé Owls are joined by Roland (expert at the hardingfele) and Jane (expert at drama). None of them, unfortunately, are experts at rocking out. The band needs more practice, but instead Lydia and Julie find themselves riding an unexpected wave of popularity...

Best friends Lydia Goldblatt and Julie Graham-Chang are as ready as they'll ever be to start junior high. But before they can try out the lessons they've learned about friendship and popularity, tragedy strikes: Lydia's mom is moving her family to London for six months. Separated for the first time, each of the girls must face bullies, secrets, and the challenge of standing up for herself. With the help of their trusty notebook, they try to keep...

In the weeks leading up to Ali's murder, Ali reveals her plots against Emily, Hanna, Aria, and Spencer, as well as a dark secret that has the potential to destroy everything.

Twelve-year-old best friends Julie and Lydia are reunited after six months apart, but the news that their friend Sukie's mother has died after a long illness causes them to reevaluate their goals and focus on being supportive of the friends they already have.

After dying, high school senior Charlotte Usher is as invisible to nearly everyone as she always felt, but despite what she learns in a sort of alternative high school for dead teens, she clings to life while seeking a way to go to the Fall Ball with the boy of her dreams.