Annie Walker is removed from CIA training and thrust into the inner sanctum of the Agency for what appears to be their need of her exceptional linguistic skills, but there may be something or someone from her past that her CIA bosses are really after.

After a "simple brush pass" goes sour, Annie is stranded and on the run in Zurich with Eyal, a Mossad agent who can't be trusted. Meanwhile, as Auggie works to bring Annie home safely, Arthur and Joan are busy trying to track a leak coming from within the CIA ... and Auggie is near the top of the list

Annie is tasked with investigating a potential national security leak originating from the Senate Intelligence Committee. Elsewhere, Auggie is assigned as a stateside handler for his old special ops unit, and Annie is worried that her brother-in-law, Michael, is cheating on Danielle.

When communication systems throughout D.C. are shut down by a hacker, Auggie is put in the field to obtain the code for the CIA. But his excitement to be doing field work is tempered when he learns that the hacker responsible is Natasha Petrova ... who happens to be his ex-girlfriend.

An Iranian trade delegation member attending the WTO conference in Toronto escapes his handlers and contacts the CIA, hoping to parlay stolen intelligence into safe passage to the United States.

Annie is forced to confront her past when Ben Mercer walks into CIA Headquarters.

When a covert CIA operative and friend of Joan's gets caught up in a hostage crisis in Mexico, Annie and Joan are sent to assess the situation under the cover of being a news team. But when Arthur decides that they need additional backup, he sends Ben Mercer to assist them.