A beautiful young woman, Emily Thorne, who was known as Amanda Clarke, rents the Southampton home she once shared with her father and sets her plan in motion.

Emily gets to work on her next target, a former family friend who testified against her father; Victoria tries to find more information on Emily.

With help from her new ally, Emily seeks to destroy the district attorney who convicted her father; grieving Victoria tries to confirm her suspicions about Emily's past.

A charity event for mental health allows Emily to seek payback from the therapist who had her committed when she was a child. Meanwhile, the Porter brothers face more problems with the family bar; and Conrad sneaks off to see Lydia.

Victoria feels regret as she reflects on David’s downfall, and a fight with Charlotte weighs on her. Meanwhile, Lydia wants to get even with Emily and the Graysons; and Daniel rethinks his goals in the wake of Tyler and Conrad’s betrayals.

Having discovered that her most valuable ally has turned against her, Emily desperately reaches out to her mentor for advice. Victoria's worst nightmare comes true when she finds herself totally alone both in her life and her home, while the threat of Tyler's negative influence continues to grow.

An unstable visitor crashes Daniel's intimate birthday celebration; Conrad and Victoria use Charlotte as a pawn in their bitter divorce battle; Emily's plan starts to unravel.

Emily sets her sights on a new target when a famed author who has deep ties with both the Graysons and the Clarkes returns to town and Conrad proves how dirty he's willing to get when Daniel gets dragged into the divorce.

Daniel's romantic proposal may come with dire ramifications; Charlotte is forced to move back in with her mother; Jack's life is in jeopardy when a person he adores betrays him; Nolan makes Emily think cautiously about her actions.

In the excitement over Emily and Daniel's engagement party, things start to unravel for everyone; Victoria uses Conrad's father against him; Jack gets more involved; Charlotte and Emily both face problems.

The murder scandal at the Fire & Ice party rocks the Hamptons, and someone has to take the fall. The devastating turn of events call for desperate measures, as the Graysons form a united front, Emily grows more anxious, Ashley steps up for the family, and Jack is not the only one wondering where Amanda has gone.

The impending release of Daniel has everyone on edge as the press grows more and more hostile; the SEC begin their investigation on Grayson Global; and Emily discovers a new photo taken of her father on the day of his death, leading her to more clues about how he died -- and also to a mystery woman and an ominous new target.

Back in 2002, Amanda Clarke starts reading her father's journals and begins staking out the Grayson's home. As her anger and determination grow, she forms a plan to seek justice -- as Emily Thorne.

A painful loss forges a stronger bond between Emily and Jack, Victoria forms a new alliance that could seal Conrad’s fate, and Charlotte sets out on a vendetta of her own with Declan as her target.

With the end in sight, Emily fearlessly pushes forward, closing in on the final phases of her plan for revenge, while the Graysons continue their downward spiral into the rabbit hole of self-destruction. But a big, explosive event leaves much hanging in the balance, courses are altered and even more is left in question.

Faces from the past are reemerging all around the Hamptons, and for Victoria and Emily it brings on different kinds of trouble and significance. Meanwhile Jack’s sense of duty grows exponentially, and Padma makes a move that could have major ramifications for Nolcorp.

Emotions run deep when Jack and Amanda's wedding reminds Emily of what could have been. Meanwhile, things for Daniel get complicated at Grayson Global, and Conrad begins a new chapter.

The queen and king of smoke and mirrors, Victoria and Conrad, make a calculated move, starting a charitable foundation in the late Amanda Clarke’s name. But little do they know that Jack is not buying it and has a plan of his own. Meanwhile, Emily’s past catches up to her again.

As Emily's blackouts grow increasingly violent, her only hope lies with the person she betrayed most, while Victoria makes a drastic move to deal with someone from her past.

Nothing is off limits as Emily and Victoria are dead set on destroying each other. Lives will be lost and fates will be altered, but who will rise victorious?

As Emily plans to host her most surprising 4th July party ever, Victoria finds a way to turn her greatest setback into a dangerous advantage. Unbeknownst to Emily, Nolan and Jack, David Clarke plans his next move.

Emily confronts former friends and a lifelong enemy in a desperate search for Victoria. The fallen Queen of the Hamptons finds herself at the mercy of her own darkest secret.

Emily's life is on the line as Victoria orchestrates a family reunion with deadly potential, regardless of who gets caught in the crossfire.

Emily is shaken to her core by an unexpected revelation. Victoria sinks her claws deeper into David.

Emily tries to arrange a reunion with her dad, but she needs to be creative about it now that he's in the spotlight again and Victoria's regained the upper hand.

Charlotte's downward spiral takes her to a place where even Emily worries she can't be saved as David and Nolan have a very public reunion.

Daniel confronts Emily about the secrets she kept while things heat up between Margaux and Louise.

Victoria's future hangs in the balance as the FBI closes in and a mysterious new enemy strikes.

Emily and Victoria learn that information is the most dangerous weapon while Nolan offers up information of his own in order to salvage his reputation.

Jack is torn between Emily and the new woman in his life, while Nolan and Louise bring Southern charm to East Hampton.

As Emily and Victoria grieve, David springs into action to protect his loved ones.

David finally decides to settle his debt to Victoria while Emily helps Nolan with a takedown of his own.

In order to survive, Emily and Victoria must set aside their grudge, while Jack and David race to save them before they kill each other.

Emily helps Nolan’s blushing bride deal with the skeletons in her closet while Victoria contends with a mysterious new socialite.

When Margaux uses her ammunition against both Emily and Jack, their friendship takes a dramatic turn. Meanwhile, Natalie shows Victoria the true reason behind her arrival in the Hamptons.

Natalie throws a Fourth of July party and invites David as her date. Ben turns to Emily and Nolan for help when Margaux threatens his ex-wife. Lyman after failing to help Victoria turns to someone else and it turns out deadly.

Emily strives to clear Jack's name; Louise and Nolan are visited by officer Ben Hunter. Emily thinks Margaux is behind it. Jack's mother comes to defend him. And with Emily they try to prove Jack's innocence. Emily asks Victoria to talk Margaux.

While dealing with grief, Emily is faced with collateral damage; Victoria goes after a new lead.

Emily plans to reclaim her life as Amanda Clarke and her outlook is bright, but that changes when Victoria unearths shocking secrets from her past.

After Victoria is attacked, she takes matters into her own hands, while Emily is forced to come to terms with what she really wants.

As Emily sifts through the wreckage of her life, even her closest friends worry she has finally gone too far.

Emily enlists Nolan and Jack to help prove her innocence while Ben takes measures to keep her locked up.

Season Finale- Backed into a corner, Emily is forced to admit her guilt, but she'll have to decide how far she'll go before admitting defeat.