After the young son of a British Intelligence officer is kidnapped and the man fails to report him missing, the CIA and British Intelligence's investigation takes an unusual turn. They learn that the man didn't report his child missing because the kidnappers are Iraqis and he has arranged to trade plans for an Allied invasion of Iraq in exchange for his son's return. Matt and Carl join the investigators in London to ensure that the officer's plan is derailed without losing the boy in the process. Meanwhile, Robert Quinn, who is temporarily replacing Director Pierce, starts implementing changes.

Daniel Benzali (""Murder One"") guest stars.

An assassination attempt on Lisa strikes Matt instead and leaves him hospitalized and fighting for his life. While Robert tries to hide the events from the press, Jackson is forced to work with the chief of counterintelligence to determine who ordered the attack on Lisa and how her position at the CIA was uncovered. Eventually, Lex admits to indirectly blowing Lisa's cover to the assassin and, in the process, unknowingly giving him access to information on Lisa. However, Lex soon redeems himself by leading Robert and Jackson to the terrorist organization behind the shooting. As Matt hangs on to his life by a thread, Lisa contemplates a leave of absence from the CIA.

After a CIA agent is murdered, the agency joins with the police department of Washington, D.C. to investigate his murder.