Ariana Osgood is stuck at Easton Academy over Christmas vacation with bad-boy Thomas Pearson, but instead of cuddling with her boyfriend in Vermont, she finds herself reexamining her feelings for Thomas, while unaware that someone has been secretly watching their romance unfold.
While her military parents are stationed in South Korea, high school junior Megan learns a great deal about boys and herself when moves to Massachusetts to live with family friends who have seven sons.
Arrested for murdering Thomas Pearson and sent to the Trumball Correctional Facility, a facility for the criminally insane, formerly super popular Ariana Osgood spends her days plotting her escape and the revenge she will take on her old classmates at Easton Academy.
After eliminating her best-friend-turned enemy, Airana Osgood feels on top of the world at the prestigious Atherton-Pryce Hall, but when Lexa Greene discovers a terrible secret, Ariana's fate hangs in the balance.
When an announcement is made for a special scholarship, four best friends begin a special club that is designed to demonstrate the "purity" required by the scholarship committee.
Reed and two former Billings Girls, Kiran and Taylor, venture off on a luxurious vacation to the Caribbean, but it quickly becomes evident that exclusive shops and a private island are not enough to keep them out of harm's way.
Ariana Osgood has left her troubled past behind and become wealthy and popular by assuming the identity of Briana Leigh-Covington, but when her former best friend, who knows her secret, shows up, she may need to kill again.
After faking her own death, Ariana Osgood assumes another girl's identity at a private school, but has to deal with an old enemy who is a rival for a coveted spot in the school's exclusive secret society.
Noelle and Reed, having realized they are descendants of a coven of witches, worry Reed has recreated the witches' magic and about the consequences of the other Billings Girls discovering their heritage.
Reed Brennan returns to Easton Academy ready to put the murderous nightmare of her previous year behind her, but Cheyenne Martin, the new resident of Billings Hall, is determined to keep the traditional secret initiation at Billings alive.
