A new semester at Crown Lake means it's time for "Heather" to find a new target...but, is Nellie up for the challenge?

Nellie has some second thoughts when it comes to acting as the new "Heather." Meanwhile, Chloe steps in to help Lola after her "secret" is exposed on the tattle wall.

Nellie and Lucy devise a plan to knock Tiffany off her throne. Meanwhile, Lola ruffles feathers on the wrestling team and Josh shares his concerns about Nick's "cures."

Tensions are at an all-time high as Lola challenges a fellow wrestler, Josh confronts Nick about his "services", and Nellie stands up for Chloe against Tiffany's unrelenting bullying.

With Tiffany's secret exposed, Nellie rises up as the new head of the popular girls. Meanwhile, Chloe faces her inner demons as she navigates her feelings about Lola...

Nellie spends detention in the "crypt." Meanwhile, Chloe goes on an impromptu date and the entire school faces backlash when Nick's "study pills" are uncovered.

As Nellie seeks revenge on Miss Rose, Chloe confronts her confusion, and Tiffany's family troubles are exposed -- it's just another day at Crown Lake Academy.

It may be the season finale, but the mystery is far from over. Nellie, Chloe, and Tiffany work together to uncover a long-held Crown Lake secret that could change everything... but, will it be enough to reveal Heather's identity and stop her, once and for all?

Tiffany is Queen Bee with an entourage of mean girls who seem to take all the pressures in stride. Nellie finds a guide book from Heather, a former student, that offers to show her the way. But can she trust the book...or anybody...at this strange and challenging school where everyone but Nellie seems to have things figured out?

At Crown Lake, dirt gives you power. But, is having power at the Academy worth losing a potential new friend over? Nellie's about to find out.

Nellie and Tiffany set aside their differences (if only briefly) to escape detention.

Nellie and Josh hit it off until she learns about a long-standing and controversial rule held during the Crown Lake Boys' Treasure Hunt.

Unable to cope with the drama of Crown Lake, Nellie returns to Attaway, but quickly discovers that things aren't much better at home.

After the Scavenger Hunt debacle, Nellie returns to Crown Lake with a vengeance.

Nellie uncovers a sad truth behind Tiffany's tough exterior. Meanwhile, Ryan investigates some of the strange goings-on at Crown Lake... with Nellie at the center.

Nellie attends the masquerade ball, but uncovers much more than just the faces behind the masks.