Joan sends Annie back to the training center or Farm under the guise of completing her weapons training. It seems that the identity of a promising recruit was revealed. They suspect a training officer and they want Annie to find out if it's him.
While in Argentina attempting to exchange a spy, an assassin attacks Annie and the spy, Carlo Reni. Forced on the run, Annie and Carlo have to evade arrest and figure out who set them up before the assassin can catch up with them.
Annie discovers that the latest CIA casualty is her former language professor - whom she had no idea was part of the agency - and she is assigned to find a secret message in his documents before his killers.
While Annie searches for a new safe house, she is assigned to surveillance duties on a pair of brothers who may be plotting an attack against the Spanish government. Meanwhile, Jai launches a power play to get away from Arthur.
Arthur suspects that an imprisoned spy who betrayed the U.S. may have gotten a Russian asset killed, which leads Annie to a mission to investigate his two daughters, which hits close to home because of her situation with Danielle.
An agent for the British intelligence, MI6, approaches Annie since she is an employee of the Smithsonian. He wants her to help with the surveillance of an art dealer. Kenneth wants her to get him into the Smithsonian to gather information.