When best friends Jenny and Addie start sixth grade, Jenny quickly discovers that Addie is interested in joining the Pops, the coolest seventh grade clique in school.

"An accomplished photographer and the devoted mom of an adorable little boy, Allie Ross has just moved to an upscale DC suburb, the kind of place where parenting feels like a competitive sport. Allie's desperate to make a good first impression. Then she's framed for murder. It all starts at a neighborhood party when a local dad corners Allie and calls her by an old, forgotten nickname from her dark past. The next day, he is found dead. Soon, the police...

Finally surgically transformed into a "pretty, " sixteen-year-old Tally, now gorgeous and programmed to think only happy thoughts, is plagued by tangled memories of living in the Smoke, a rebel colony of "ugly" runaways hiding from the Special Circumstances authorities.

After the death of Cheyenne, Reed is elected the new leader of Billings Hall, but her grip on the social scene is tenuous, as she discovers when Easton is the only prep school not invited to a Legacy party and it falls to her to get them back on the list.

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.

As the new president of Billings Hall and the most eligible girl on campus, Reed has never felt so popular until the police start asking questions about Cheyenne Martin's death.

When seventh-grade twins Payton and Emma switch places, they shake up the social hierarchy at their new middle school.

At an exclusive prep school on Long Island, Jill Newman looks forward to her senior year as a member of the school's most elite clique, the Players, until new evidence surfaces about the murder of her close friend Shaila.

Season five begins in the moments following the epic season four finale, in which Ezra was shot, among other shocking revelations. Plus, Alison is alive, and everyone is affected by her return. Caleb also returns, but is he the same? With more questions than ever and familiar faces back in Rosewood, it's sure to be another season of emotion, intrigue, twists and thrills.

As the third season begins, a summer has passed since Aria, Emily, Hanna and Spencer found out about Mona being ''A'' and the death of Maya. With the terror seemingly over and an alleged murderer now behind bars, the town of Rosewood is slowly healing from old and new wounds. Now back together and coming upon the second anniversary of Alison's disappearance, the girls find themselves back on the defensive when a shocking event rocks Rosewood.