In Baltimore, Maryland, John Summers is found dead, he who was tortured by at least two people before being murdered. After finding the body, the CIA made his death look like a suicide. The reason is that Summers was a CIA undercover agent on Middle East issues. Bruno Hawks, his director and the director of the only unit who knew Summers was undercover, suspects that someone in the agency knowingly leaked information about him which led to the murder. Hawks calls in his old friend Gideon for help, Gideon who calls in the team. They learn that Summers' last case was that of Aaliyah Nadir, the wife of Hassan Nadir, a Saudi diplomat but also a fund-raiser for terrorist groups. Hassan repeatedly beat his wife, which was how Summers got her to work as an informant against her husband and his terrorist activities. Summers has hidden Aaliyah and her two children, but no one knows where. The BAU have the CIA mole narrowed down to one of sixteen people in Hawks' unit, and know that that person knows they're there and are tracking him. But they quickly have that list narrowed down to four, who just happen to be the highest ranking in the unit, which includes Hawks himself. The team also have to find Aaliyah quickly as Hassan, a person with diplomatic immunity, is now in the US looking for his wife. Meanwhile, Garcia's assistance on the case can only be done remotely and under tight security as she is "on a list" in the CIA's data-bank. Regardless, she hopes to find some other information in the CIA's data-bank for her own personal gratification.