Michael's friend, Bill, asks for the spy's help in freeing his daughter from a prostitution ring. Meanwhile, Michael dodges multiple assassination attempts.

Michael takes on arms dealers for an airport worker, while Nate obsesses about the car and their dad's will together.

Sam takes on a case for a woman named Gillian, who is being blackmailed into using her security clearance to help smuggle heroin into the United States. Meanwhile, Michael is busy trying to arrange a meeting with Philip Cowan.

Michael must rescue Sam from heroin smugglers, who happen to be ex-Special Forces, while also evading agents who are out to get him.

Michael helps a Russian woman, Katya, whose sister was smuggled into the U.S. by gangsters; however, Katya cannot afford their extortionate demands and her sister is being held captive.

Hired by Fiona's boyfriend's friend Henry, Michael poses as a disgruntled bodyguard to thwart a kidnapping plot masterminded by a ruthless man named Lesher.

Arms trader Brennen returns and kidnaps Nate, forcing Michael to help him pull off an elaborate heist. Michael must also contend with Paxson's ongoing investigation.

When Michael's old acquaintance Larry shows up unannounced, it is up to Michael to clean up his mess. Meanwhile, Michael's brother Nate shows up with his new wife Ruth.

When Nate gets in over his head tracking down a stolen car filled with a drug kingpin's merchandise, Michael brings back an old alias to save his brother's life.

Nate returns to Miami to seek Michael's help to go after a loan shark who's harassing a widow. The guys soon discover that the loan shark is not all that he seems, however.

Michael reconnects with his mentor and offers to help go after a drug cartel in exchange for visitation privileges with Fiona. Meanwhile, Fiona leans on a new friend for help fending off a gang leader in prison.

Pearce asks Michael to help her track down her fiancee's murderer. Fiona investigates the group that tried to get her killed in prison.

Michael takes on a gangster with help from an unlikely ally. Card offers Fiona a deal to become a CIA asset, an arrangement that would prevent her from being extradited.

Michael finally gets a solid lead on Anson, but the plan to get Fiona out of prison hits a snag when an MI-6 agent tries to prevent her release. Across town, Sam must protect Barry after a cold-blooded assassin traps them in a secluded beach house.

Sam agrees to help his girlfriend's son, who is in deep trouble with a loan shark. Michael and Fiona reconnect while searching for the saboteur.