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.

Annie learns that her college professor Mark Ramsay was secretly working for the CIA when he was killed tracking a Pakistani spy ring. The CIA asks Annie to find the missing intel using her connection to Ramsay's widow Safia.

Annie keeps tabs on the daughter of a CIA analyst imprisoned for selling intelligence. After an asset is killed in Russia, the CIA suspects the woman could be helping her father.

After it's discovered that Jai was investigating Simon Fischer when he was killed, bringing Simon in becomes Arthur's top priority. In the hopes of protecting Simon, Annie requests that she be allowed to bring him in herself.

As the life of one the Agency’s best hangs in the balance, the team works to discover the truth after it’s revealed that one of their own might not be who they thought.

When a crucial CIA asset disappears from protective custody, Annie and Eyal work to find her before they lose her forever.

With Auggie in Iraq and Joan out of the office, Annie turns to Eyal to help her track down Khalid Ansari.

Annie forges a professional relationship with Henry Wilcox while also adjusting to her new romance with Auggie. But when Annie and Auggie head to Columbia searching for a new person of interest: the Puma, the spy game gets serious.

As Annie and Auggie’s romance heats up, both begin to notice how it strains their working relationship within the CIA. Arthur and Henry almost come to blows.

Annie is sent to Vienna, and must cut all communication with Auggie. Meanwhile, Joan and Arthur decide to bring in reinforcements.

Annie gets involved in an FBI investigation in order to cover her tracks. Elsewhere, Henry presents Annie with a major opportunity.

Annie finds she has met her match when she has to work to halt the illegal sale of deadly weapons and is teamed up with a seasoned operative. Meanwhile, circumstances force Auggie to deal with past demons' and Calder's suspicions of Annie Walker grow.

Annie makes a desperate attempt to take down Henry. Elsewhere, Calder and Annie finally face off.

Annie begins her first deep cover operation completely on her own. Meanwhile, Auggie, Joan, Arthur and the rest of the CIA manage the fallout from Annie’s "death" at Calder’s hands.

Despite his misgivings, Auggie decides to work with Calder on an alternate method to destroy Henry. Joan confronts Auggie about this alliance.

Henry reaches out to his only ally within Langley, Calder. Joan reveals something during her deposition that puts a wedge between herself and Arthur. An old flame reveals she still holds a torch for Auggie.

Annie travels to New York after receiving new intelligence. Elsewhere, Arthur's court date looms nearer, and Joan finds a solid lead.

Calder wonders if Joan is the only person he can trust when he returns to the United States with good news. Elsewhere, Annie and Auggie continue their work to bring Henry to justice.

Annie and Auggie consider their future just as a connection from the past resurfaces and leads Annie on a race against time to prevent a terrorist attack on U.S. soil. Elsewhere, tension mounts between Calder and Joan as they wait to see who will become the new DCS and Arthur considers about a career in the private sector.

Auggie's emotional history with a potential asset complicates a mission when he and Annie switch roles as operative and handler in Paris. Joan attempts to play matchmaker for Calder. Arthur heads on his first operation abroad for McQuaid Security.

While on an undercover mission, Annie must keep her guard up after she accepts an invitation to the Russian Embassy in Paris. Auggie attempts to juggle more than one relationship, while Joan unravels the details of Arthur’s most recent business trip.

Annie and Auggie dig into a conspiracy theory about the attack on the CIA; Joan and Calder must make a difficult decision.

Annie helps McQuaid with a difficult mission, against Auggie's wishes; Hayley's hunt for the truth becomes more dogged.

Annie searches for a rogue chemist in Germany; questions about Joan's time in the Balkans.

After a startling revelation, Annie works with a new ally; McQuaid and Joan go into the field.

Annie and McQuaid must sneak into Russian territory in pursuit of Belenko.