It's the start of a new semester at Millwood, and that means fresh drama.

Cassie discovers an unexpected enemy at school.

The balance of power continues to shift at Millwood High.

Jenna falls deeper under Ms. Dawson's influence.

Cassie and Diana form an unexpected alliance.

Cassie and Diana try to save Jenna from Ms. Dawson's grasp.

Jenna is drawn ever closer into Ms. Dawson's clutches, despite Spencer's warnings. Meanwhile, Eli gives Morgan an ultimatum that could change everything.

Kate has an unusual way of dealing with her Aunt Bonnie's passing. Meanwhile, Cassie and Diana work as a team to uncover Miss Dawson's past.

Cassie and Diana reveal some startling new evidence about Miss Dawson’s past, but this evil teacher isn't going down without a fight.

Luca confronts Sam about the stolen song. Morgan, Cassie, and the girls band together for one last ditch effort to release Jenna from Miss Dawson’s evil grasp. But, will they succeed?