One of Aria’s past indiscretions is fodder for a new “A.” and Emily recalls a crucial event from the night she lost her memory.

Spencer asks questions, but stumbles upon a larger secret, while Aria agrees to be Jenna’s accompanist.

Visiting Mona is driving a wedge between Hanna and Caleb and Hanna is forced to weigh up how honest to be with him.

Jenna throws a party to die for and the Liars are suspicious when Garrett is let out of prison to visit his mother.

A new clue could lead the girls down the wrong path. Emily remembers something new from the other night but the recollection suggests a very surprising suspect.

Hanna is worried that Detective Bryce is trying to frame her and the others turn to a very unlikely person for help.

Spencer asks Caleb for help. Aria learns about Ezra’s past. Emily is worried about how Paige will be affected by everything “A” has done to her.

After Spencer turns in desperation to Cece for help with her college application, she and Aria may find some answers at the Kahn brothers’ party.

A cabin may hold the key to Maya’s secrets so Hanna and Emily do some snooping.

Paige’s past comes back to haunt Emily. Aria gets a surprise from Ezra’s past.

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.

A homicide detective teams with a man who takes on incredible but uncontrollable strength when enraged. In the series opener, the two meet for what they discover isn’t the first…

Vincent helps Cat investigate the suspicious death of a ballerina. Meanwhile, Tess makes a surprising discovery about the man she’s dating.

Cat is placed on leave after interfering in a murder investigation. Meanwhile, J.T. fears that Vincent will become exposed.

Vincent revives a 19-year old boy who was left for dead in a dumpster and rushes him to the E.R., where he remains in a coma. After Evan declares that…

Vincent is captured on a convenience store surveillance video while preventing a robbery, and Cat warns him to be extra careful when his photo appears in the newspaper. Cat and…

After she’s seemingly stood up by Vincent, Cat wonders if it’s because he saw her kissing Evan at her birthday. Actually, Vincent mysteriously blacked out on his way to meet…

JT thinks Vincent may somehow be involved in Cat’s homicide investigation after she mentions a local college fraternity brother was brutally killed. JT examines Vincent to determine the cause of…

JT suspects that Catherine is the trigger of Vincent’s blackouts, so to disprove this theory, Vincent allows JT to inject him with endorphins and sedatives that force him into a…

When Catherine’s dad gets remarried, the bride-to-be and her bridesmaids try to find the daughter-of-the-groom a date for the wedding. Uncomfortable with being set up, Cat reluctantly admits that she’s…

During a secret concert, Scott and Stiles come up with a method to trap the new shapeshifter. At the same time, Allison’s mother comes up with a plan of her…

Even as his relationship with Allison becomes further strained, Scott and Stiles must attend Lydia’s birthday party while Derek locks his new wolves up to watch after them on their…

Scott, Stiles, Melissa and Stillinski are taken hostage; Allison tracks Derek to the station.

Scott plays in the championship lacrosse game and must figure out a way to stop Gerard. Meanwhile, Allison continues her hunt for Derek and his pack.

Scott races to uncover Gerard’s master plan following a shocking death on the lacrosse field. Derek plots to take Gerard down using his own methods. Erica and Boyd are captured…

With startling new information about the shapeshifter, Scott and Stiles hurry to protect their friends while Allison is given an investigative task by her family.

As Lydia begins to make connections about the bite from Peter, Jackson causes new problems for Scott and Stiles while Derek has a crisis of faith in his leadership as…

When Lydia goes missing from the hospital, werewolves and hunters begin a search.

Isaac’s father is murdered; Scott, Stiles and Derek plan a break-out. At the same time, the Argent family remove the principal and Allison’s grandfather replaces him. Scott senses that another…

Scott tries to keep Derek from creating new werewolves; Argent officially begins Allison’s training; the new creature in town takes another victim.

When the new shapeshifter strikes again, Scott has to recruit a reluctant Allison to acquire a rare book in Gerard’s collection, while also once again surviving dinner with her family.

Derek becomes convinced that Lydia is the shapeshifter they’re after, forcing Scott to gather his friends — and even some enemies — to protect her.

Michael is furious when he discovers a secret that Cassandra kept from him, so he and Nikita fly to Moscow to confront her. Meanwhile, Alex makes a last ditch effort…

Amanda and Ari set up a board meeting with Zetrov and prepare to take over the company. After a heated face-to-face confrontation between Nikita and Amanda, Nikita recalls what Amanda…

When Nikita worked for Division, she targeted a man named Nicholas Brandt and infiltrated his inner circle. She captured him and he’s been behind bars ever since. However, Percy springs…

Nikita convinces a reluctant Birkhoff to use 20 million dollars of his own money in a plan to bankrupt Percy and Division, but when Percy ends up stealing Birkhoff’s entire…

When it looks like Percy’s nuclear weapons plan is getting out of control, Ryan suggests they go to the Director of the CIA, Morgan Kendrick, for help. Nikita is vehemently…

Percy calls the President the United States and threatens to set off a nuclear explosion unless his demands are met. Birkhoff finds two scientists who could help stop Percy’s new…

Nikita and Michael invade Division in an attempt to capture Percy. Alex and Sean get caught in a deadly gunfire battle with the U.S. Marines and Ryan must convince the…