Peggy races against time to stop Ivchenko and Dottie from carrying out Leviathan's master plan using Stark's stolen technology.
Peggy is cornered. Meanwhile, the SSR closes in on Howard Stark.
Daniel finds the final piece of the puzzle to tie Peggy to the nightclub and Brannis, while Peggy and Jarvis try to track down the woman who seduced Stark and gained access to his weapons vault.moreless
Peggy requests assignment to Jack's mission to Belarus and gets it when she provides the Howling Commandos as backup. Meanwhile, Roger reaches out to Jarvis, and Dottie pays a visit to Peggy's apartment.moreless
The SSR arrests Edwin after tracing Howard's car from the Roxxon explosion. Meanwhile, Peggy continues her pursuit of Leviathan.
After figuring out the last clues of the Mosconi Code, Neal and Peter try to find the Diamond before somebody else can get to it first.
When Neal and Peter realize that a client trying to reach Rebecca hasn't seen her before, they interrupt Diana's maternity leave and ask her to pose as Rebecca in order to expose the client, a corrupt stock trader. Meanwhile, Rebecca offers necessary information in exchange for seeing Neal and Mozzie figures out how to solve the last of Mosconi clues.moreless
After learning Rebecca lied to him, Neal finally tells Peter about the Mosconi Codex, resolving the tension between them. Peter realizes Rebecca has developed real feelings for Neal and tries to use it to their advantage to lure her into a trap, but she can escape. Unwilling to put Neal's life at risk again, Peter asks Neal to step back. However, with Rebecca still holding Hagen's blackmail tape, Neal sets out on his own to get to her first.moreless
After learning of Neal's betrayal and part in Peter's release from prison, Peter is unwilling to forgive Neal and considers taking a new job as section chief in D.C. Meanwhile, Curtis Hagen captures Rebecca and pressures Neal and Mozzie into deciphering the hidden message from the codex that will lead to a mysterious treasure.moreless
The reappearance of a single Welsh gold coin that got Peter out of jail leaves Neal little time trying to stop Peter from getting to the truth. However, after weeks of growing doubts about Neal, Peter is already on the verge of discovering the truth about Neal's wrongdoings.
At the same time, Neal and Mozzie work on a plan to steal the stained glass window.
When a stolen shipping crate containing a fossilized dinosaur egg shows up, Peter and Neal try to find the Tyrannosaurus Rex skeleton that belongs to the egg. Meanwhile, Peter learns of Neal and Rebecca's relationship and Neal realizes his lie about his identity is getting in the way of his feelings for Rebecca.moreless
Peter's ex-girlfriend Agent Jill Stone shows up and asks Peter to help her get to a tech genius who is trying to sell a powerful microchip. When Jill requests that Peter shuts Elizabeth out from their case, an already jealous Elizabeth becomes even more worried and decides to do a little spy work on her husband which soon leads right in the middle of the action.moreless
Neal and Peter go undercover as the support crew of a rising Russian figure skater in order to get closer to a Russian mobster and a passport forgery ring.
Peter is getting used to his new assignments and Neal has to make a museum heist work.
Cat and Vincent wonder if Alex can be trusted to keep the secret of Vincent's past. Evan discovers that Claire, the woman he is dating, has been keeping secrets from him. Heather meets Joe's younger brother, Darius, and develops feelings for him. Vincent tries to win over Cat with romantic gestures for Valentine's Day.moreless
Cat starts to believe that Muirfield might have tracked down Vincent, and despite her promise to avoid seeing him, Cat has to interrupt his romantic cabin getaway with Alex to protect them. Meanwhile, Evan finds a bug in his lab, which makes him start to believe J.T.'s warnings about the dangers of his research.moreless
Vincent struggles to sort out his feelings for Cat and the memories from his old life with Alex. After J.T. discovers that Evan is planning to recommend that NYPD form a task force to catch the beast, he tries to figure out how to stop Evan. Meanwhile, Tess works on a case involving the mysterious skydiving death of the wife of a billionaire adventurer, while Cat remains off-duty as she recuperates from her gunshot wound.moreless
Vincent narrowly escapes being caught by his former fiancée, Alex, and has to face the fallout of his past. While Cat recovers in the hospital, she deals with her feelings for Vincent. Meanwhile, J.T. receives an unexpected visit from someone interested in his past research on mutant DNA.moreless
New evidence found online has Moretti seeing Pierce's conspiracy theory in a new light. Pierce's new doctor presses him to face the truth about Natalie. (Part 2 of 2)
When a former student tells Pierce about a potential conspiracy regarding a U.S. senator's death, things soon spiral out of control. Pierce may not be able to trust those around him. (Part 1 of 2)moreless
Reese and Finch go into overtime when the Machine gives them the numbers of four Persons of Interest. Meanwhile, Carter deals with the aftermath of the recent assassination attempt on her, and Reese's past resurfaces.moreless
After a cyber attack on the DOD, NCIS and the NSA team up to locate the person responsible. Callen continues to look for information regarding his past.