Bailey Morgan isn't the type of girl who shows a lot of skin, but somehow, she ends up in a dressing room at the mall with her friend Delia applying a temporary tattoo to her lower back. Never one to suffer fashion doubt, trendsetter Delia knows exactly where she wants her own tattoo: on her stomach, right where her shirt ends can you say "midriff"? Annabelle, the quiet one, chooses the back of her neck, and tomboy Zo plasters hers on the top of her foot.

Avery Grambs has a plan for a better future: Survive high school, win a scholarship, and get out. But her fortunes change in an instant when billionaire Tobias Hawthorne dies and leaves Avery virtually his entire fortune. The catch? Avery has no idea why - or even who Tobias Hawthorne is. To receive her inheritance, Avery must move into sprawling, secret passage-filled Hawthorne House, where every room bears the old man's touch - and his love of puzzles, riddles, and codes.

Bayport High's Varsity cheer squad is made up of the hottest of the hot. But this A-list is dangerous in more ways than one. The Squad is actually a cover for the most highly trained group of underage government operatives the United States has ever assembled. They have the perfect cover, because, beyond herkeys and highlights, no one expects anything from a cheerleader.

Sixteen-year-old Kali D'Angelo has always known she's different. Sure, she goes to high school and even attends pep rallies. But every other day, Kali becomes something else, hunting and killing demons, hellhounds and other supernatural creatures. On those days, she is indestructible. When a supernatural creat leaves the mark of death on a popular cheerleader, Kali knows she is the only one who can save her. There is only one problem. Today, Kali is only human.

There are people in this world who are Nobody. No one sees them. No one notices them. They live their lives under the radar, forgotten as soon as you turn away. That's why they make the perfect assassins. The Institute finds these people when they're young and takes them away for training. But an untrained Nobody is a threat to their organization. And threats must be eliminated. Sixteen-year-old Claire has been invisible her whole life, missed by the Institute's monitoring.