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
Despite being wanted by the FBI, Briggs continues his pursuit of Jangles.
Briggs is forced to into making a major decision when Mike looks into Juan's disappearance.
Things are not looking good for Paul Briggs: Charlie teams up with a Federale to investigate him and he's the number one suspect in Juan's disappearance.
The residents of Graceland need to stop a war caused by Bello's strike against the Caza cartel. Meanwhile, Briggs' past comes back to haunt him and Charlie meets an unusual ally on her search for Odin.moreless
When the Caza Cartel give Bello a deadly ultimatum, things get sticky for Briggs and Mike is forced to go further than he's comfortable with.
Briggs decides to come clean and Charlie tells her house mates about her bust. Meanwhile, Mike believes he is coming to the end of his investigation.
While Briggs helps to cover up some of Charlie's bad decisions, Mike persuades Bello to steal from a drug cartel.
As Mike manages to further infiltrate Bello's organization, Charlie and Briggs resurrect previous identities.
Tuturro and Jakes are convinced by Paige to go undercover with a marijuana farmer and a Nigerian drug lord recruits Mike to improve his gang's shooting skills.
Charlie finds that her informant is less than reliable during a drug deal and Briggs assists Lauren with her Russian Mafia case.
Mike discovers that life undercover brings with it some moral question, as he and Briggs use one gang to bust another.
Mike Warren, newly commissioned FBI agent, gets his first assignment living with 3 other agents from the FBI, DEA and US Customs.
Neal and Peter try to get their hands first on the evidence box before Senator Pratt can interfere.
Neal and Peter have to deal with sculpture forgeries and a new boss. Meanwhile, Neal's father returns and Mozzie and Neal get closer to the evidence box.
In order to catch a Bonnie and Clyde like couple, Peter and Neal take different approaches.
Peter and Neal uncover a cab con which leads to a classy jazz club and some old fashioned undercover work.
Neal and Peter try to get closer to the ones responsible for destroying Neal's family 30 years ago and start investigating a senator and his involvement.
Neal and Peter try to find out what Neal's father did. Meanwhile, they investigate a member of the Irish Mob.
When Neal and Peter get word that a thief is trying to get his hands on defense technology, they visit a FBI conference to catch the thief in the act.
Neal gives stock trading a try when he goes undercover on Wall Street.
Some burglaries are going around involving rare pieces in museums.
Peter and Neal have to deal with political fixer who was hired to ruin the trial against a criminal Peter arrested.
When Mozzie, Neal and Peter find clues to a lost American treasure, they find themselves on a dangerous treasure hunt.
An art thief blackmails Neal into stealing an important piece of art in exchange for some valuable information about his past.
A beautiful widow is about to get a giant life-insurance payout but the guys think something is up.
A thief that has been on the run from the FBI for years is tracked down by the guys.
It's up to Peter to get Neal back to the US without him being arrested.