The prosecution calls a surprise witness in Alison's trial; the girls hunt for last-minute evidence.

Moments after where the season five finale left off, Aria, Emily, Hanna, Spencer and Mona are trapped outside of Charles’ Dollhouse with nowhere to go and must now deal with an angry tormentor. Just when the Liars thought Charles couldn’t get any worse, his games take a more demented and darker turn. As the girls struggle to survive, the puzzle of Charles’ story begins to come together. Meanwhile, Ezra, Caleb and Toby continue the fight to find the girls with or without Rosewood P.D.’s help.

An uncomfortable close encounter with their nemesis awaits at least one of the tormented quartet, and a death is promised.

As the town becomes a media circus in the run-up to the new trial, the girls are betrayed by someone close to them.

Unexpected Halloween party guests pop up at every turn and The Rosewood Halloween Ghost Train becomes one killer party.

An intriguing riddle from "A" has the Liars hitting the road and heading to Ravenswood, where they are surrounded by some familiar faces.

After years of questions and mystery surrounding the night Alison DiLaurentis disappeared, The Liars finally learn what really happened to her that September night.

Aria, Emily, Hanna and Spencer feel trapped and search desperately for a way out of a bad situation.

In custody after a testing day, three of the girls count the cost of the tasks ‘A’ set them to save a life.

A creepy ‘hospital’ visited by Alison holds a sinister surprise, while Caleb goes along with a sting unwillingly.

A turncoat’s betrayal is nothing compared to the deadly trap the liars are lured into hoping to see the face of their nemesis.

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

The Halloween before Alison vanished shows her controlling nature, and reveals other manipulative souls were also active.

Ailing Aria has reason to be afraid, while Spencer’s romantic gesture results in an unpleasant surprise.

Aria, Emily, Hanna and Spencer crash the Ravenswood Founders Day Celebration after a clue in "A"'s new lair suggests that Ali may indeed be alive.

Now that Aria, Emily, Hanna and Spencer are in possession of the information that Alison left them, the girls decide that it's time to finally put an end to the mystery surrounding their friend.

The fractured foursome endure their legal punishment plus the pain of shunning loved ones. But changes are coming.

Spencer is determined to finally tell Aria what she has found out about Ezra, but Emily and Hanna are worried about what it could do to their friend.

Testimony at Alison's trial reveals a plethora of lies; Spencer, Aria, Emily, and Caleb follow a string of clues in hope of uncovering information that will clear Hanna.

Some secrets of Mona’s asylum stay come to light, a corpse must be faced, and a lost child tracked down.

It is prom time at Rosewood High School, except for Alison, Aria, Emily, Hanna and Spencer who have been banned due to "security" concerns. As the girls see this as the final humiliating blow to their high school careers, the girls' mothers try to make the best of a bad situation by offering a home prom in Spencer's barn. At first reluctant, the PLLs agree and try to make the best out of a bad situation. But one to never miss a formal, Charles has other plans in store to make this a night they will never forget. Meanwhile, Veronica, Pam, Ashley and Ella use prom night to touch base on everything that has happened to their daughters.

The Liars face off with their enemies in a chaotic fight that ends fatally. One of the PLLs learns a secret about her past that changes everything while another Liar discovers something about her future that could alter her course forever.

The discovery of a new piece of evidence about Alison's disappearance brings the FBI to town, and the last thing the girls want to do is go 'glamping' for a birthday party.

Hanna unwillingly allows Caleb’s involvement, while a crisis helpline call alerts Emily to a new suspect, and a birthday surprise goes badly.

Supervised school workshops to foster honesty result in far more disclosures and discoveries outside the classrooms than within.