After advanced technology embedded with security data is secretly woven into a designer's dress, Neal and Peter must plunge into the world of New York City's Fashion Week to prevent an international criminal from selling it.

A New York mafia kingpin enlists help from Peter and the United States Federal Bureau of Investigation after his precious bible disappears; Neal finds himself in a tango with a female villain and must decide where his loyalties lie.

Peter is looking for an FBI agent who went under cover to get something on an Asian criminal who appears to have vanished. He sends Neal under the guise of being a high roller playing Pai Gow. While in the midst of the operation, there's a raid and Neal is aided by the hostess. When they're alone she disengages Neal's wire and reveals that she's an Interpol agent. She wants Neal to make sure the FBI doesn't interfere with an operation in exchange for information about Kate. When asked he doesn't tell Peter anything. But Peter checks her out and learns that the reason she gave Neal is a lie. Neal has to choose who will he side with.

Neal Caffrey has no alibi for the robbery from a Manhattan fashion house's safe of the world's most exotic pink diamond, which was replaced by a masked man resembling him with a synthetic one bearing his initials. Peter Burke has nothing to prevent Neal being jailed by a hostile agent from OPR, the FBI's internal affairs branch. Neal however escapes, helped only by Mozzie, 'hides' at the Burke home invited by Elisabeth and sets out to prove the only other logical suspect, Tulane, faked his alibi and was hired by a third party.

Peter Burke accepts to help David Sullivan and other victims of a plot in which people are forced to take and pay off a second mortgage due to wrong foreclosures. Neil finds out those are all signed by federal judge Michelle Clark. Mozz helps him collect evidence from her chambers, but Fowler helps Clark turn the table on Burke who tried to trick her into bribing him. Neil must turn the tables on both the fiends.

Caffrey and Burke pursue a female thief who has made off with items from an extremely valuable collection. Should they fail to capture her in time, her exploits threaten to cause an international incident.

An old rival of Neal's issues a challenge to re-create a rare bottle of wine owned by Ben Franklin.

When the daughter of a man Neal once robbed, is kidnapped and the kidnapper is a man whom Neal worked with and betrayed, will only deal with Neal. So the FBI agent in charge of the kidnapping takes possession of Neal and sends him to meet with the man. When Peter talks to the father, he realizes that the man wants Neal but before he could warn him, he's grabbed. He wants Neal to help pull a job. Peter tries to find him. Neal gets word to Mozzie what he's been doing who tells Peter who figures out what the man is doing.

When Peter is suspended by the FBI for a crime he didn't commit, he is forced to run a sting with Neal and the gang to catch Mozzie's shooter, and clear his name.

When Peter is kidnapped by an old nemesis, Neal must race against time and defy the FBI to save him.

Peter must locate Neal on a tropical island before an FBI-sanctioned bounty hunter does.

Peter must devise a plan to return Neal to New York and avoid Collins.

Neal, Peter, and Mozzie track down a sly thief long sought by the FBI.

When Neal and Peter go undercover to investigate a beautiful widow about to receive a huge life insurance payment, things become complicated when Neal begins to develop feelings for her.

Neal and Peter investigate Senator Pratt's involvement with corrupt cops, which leads to a real estate developer running a kickback scheme.

The FBI begins searching the building for the evidence box. Peter, Diana, and Clinton try to stall the search. While Neal, Mozzie, Sara, and James try to get to the box first.