With Harry still missing, Mel, Macy and Maggie devise a plan that requires to ask for Tessa’s help. Parker is close to conquering his demon side, but all doesn’t go…

When Harry mysteriously disappears, a substitute Whitelighter, Tessa, surprises the sisters. With Galvin’s return imminent, Macy knows she must tell him her decision about her demon side. Niko is curious…

Officer Nolan kicks off his birthday by babysitting a crime scene at a law office. Meanwhile, Officer Bradford and Officer West are set to receive special awards, and Sgt. Grey…

Amy and Karma are both ready to make amends, but neither wants to be the first one to extend the olive branch; Zita shows her support for Liam.

Hester’s future lies in the balance; Amy makes an important decision.

Lauren and Amy think one of their parents is having an affair. Karma and Shane feel insecure in their relationships.

Shane and Amy help Lauren with her revenge on Theo; Karma and Reagan must work together.

When a new Principal cracks down on Hester, Shane leads a revolt. Amy suspects Karma is hiding something.

Bob takes Patty to a pageant in Alabama to meet his former mentor, Stella Rose. Coralee gets an unwelcome visit from her sister.

The girls are not feeling merry at Christmas because Spencer’s murder charge looms over them. Things improve though after they see an opportunity to gather evidence to clear her name.

Hanna’s drinking gets out of control; Emily looks for information linking Alison to Noel.

Aria searches for information on a patient; Spencer borrows Ezra’s spy equipment.

Hanna is pushed down a dark path after Alison moves in; Aria fails in her duties as maid of honor.

Alison returns to Rosewood High and attempts to repair the damage she inflicted years earlier.

Alison struggles with the death of her mother, as the Liars try to navigate through her new lie.

Alison attempts to regain her position as leader of the gang upon her return to Rosewood High.