Michael plays a key role in a CIA murder investigation. Meanwhile, the team helps a client who reminds them of Michael — a former army sniper who wants revenge on the men who put his sister on the hospital.

The CIA abandons Sam after he goes undercover with a heroin dealer while trying to recover a weapon. Meanwhile, Pearce continues searching for Max's killer.

Michael and Jesse go on an extraction mission on a Caribbean island but end up trapped there by mercenaries. Meanwhile, Fiona tries to get information out of an ex by doing a favor for him.

Michael goes undercover with a group of hijackers in order to assist Jesse with a security job, but he changes the plan when the hijackers take hostages at the airport. Madeline assists Michael by organizing the hostages and trying to lead them to safety.

Michael and Fiona pose as a wealthy couple at a South American resort in order to extract a bioweapons specialist. Elsewhere, Sam and Jesse try to trap Max's killer.

With convincing from Sam and Jesse, Pearce begrudgingly lets Michael take drastic measures attempting to clear himself of Max's murder. Meanwhile, Larry returns, having kidnapped a government psychiatrist, and insists that Michael help him with a job.

Michael and Fiona plan to abduct a hacker in Puerto Rico in order to obtain his software, but the man has several other enemies to contend with. Elsewhere, Madeline learns to retrieve information from the police under the tutelage of Sam and Jesse.

Michael leads a rescue mission for a scientist abducted by an African warlord, while Sam and Jesse get in trouble during an undercover mission. Meanwhile, Madeline discovers that someone close to her is keeping secrets.

A friend of Jesse asks the team to help take out his boss, who has been smuggling blood diamonds into the country with the help of diplomatic immunity. Michael asks Pearce for help transferring a prisoner who may be able to provide him with information on Anson.

As the team reaches a breaking point with Anson and his sinister plans, Pearce puts Michael in charge of his biggest CIA mission yet.

Michael pursues Anson in Miami. Meanwhile, Fiona is taken into custody and interrogated by a former foe.

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 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.

Michael intentionally gets arrested in order to help an FBI agent take down a vicious mobster. Jesse and Pearce follow up on the gun sale that put the weapon in the hands of Nate's murderer, but run into danger.