In the Season 4 finale, a tactical-assault team descend on Miami to come after Michael and his loved ones, forcing Michael to take drastic action to keep everyone safe.

Brennen attempts to blackmail Michael into killing government agents and joins forces with another player to strengthen his strategy.

Sam tries to help a friend who's been deemed a dirty cop clear his name. Elsewhere, Michael plans to meet with Jesse's former handler in order to make sure government documents end up in the right hands.

Nate tries to locate a stolen car filled with drugs but soon gets in over his head, prompting Michael to step in. Elsewhere, Sam and Jesse set out to prevent the sale of a highly sensitive government document in the Dominican Republic.

A dangerous thief tries to steal a chemical weapon from Venezuelan revolutionaries, forcing Michael to work with his foe to prevent a disaster.

Michael tries to prevent a bombing arranged by a lawyer out for revenge against a local gang. Elsewhere, Michael and Jesse must track down a highly sensitive document that's been stolen.

Michael tries to find a kidnapped girl who was taken by a client of her defense-attorney father's.

Michael helps a victim of a womanizer's scam, which depleted her life savings.

Michael must find his way into a high-security prison to keep watch over Sam's inmate friend, whose life is endangered by another prisoner.

Michael poses as a hit man in order to protect a witness whose testimony is crucial to stopping criminal activity.

A job protecting a businessman at a house party goes awry, putting Fiona in danger and forcing Michael, Sam and Jesse to concoct a plan to save her.

Michael takes on the case of a former CIA operative who's being pursued by Russian spies.

Sam and Jesse question a hit man about a killing; Michael and Fiona investigate an antiques thief by going undercover as security consultants.

A reluctant doctor turns to Michael for help when a group of vicious drug dealers terrorize his neighborhood clinic.

Michael and Sam become entangled in a hostage standoff at a bank, while Fiona helps Jesse dig up information on a weapons runner.

Michael takes on the mob at Miami's docks, where a port worker is being threatened by the group. Elsewhere, Michael and Jesse gather intel on an underground-artillery operation on the waterfront.

Michael helps a fellow burned agent who's being pursued by a drug trafficker with a vendetta against him.

A lawyer needs protection from a ruthless biker gang in the Season 4 premiere. Meanwhile, Michael attempts to thwart a terrorist threat and must join forces with an unexpected partner.