As Emily plans to host her most surprising party ever, Victoria finds a way to turn her greatest setback into a dangerous advantage. Meanwhile, unbeknownst to them both, David Clarke plans his next move.
Daniel decides to confront Emily about the secrets she has kept; things get hotter between Margaux and Louise; Emily investigates her father's claims; Victoria struggles desperately to keep David on her side.
Nolan recruits Emily to deal with Louise's brother; Margaux fights to uncover the truth about Daniel; Malcolm Black's return forces David and Jack to take action.
Emily helps Louise uncover secrets of her past; as Nolan and Louise's wedding reception brings many unfriendly faces to town; Jack struggles with his role in recent events; Victoria contends with a mysterious socialite.
Emily, Jack, Nolan and Louise scheme to put an end to Margaux's revenge; Natalie reveals a secret to Victoria; causing Victoria to make an unlikely ally in Lyman.
Now being backed into a corner, Emily Thorne is forced to admit her guilt but first she will have to decide how far she will go before admitting defeat.