After a disastrous mission in Bangkok, Peter goes AWOL to track an American agent accused of leaking secrets. Meanwhile, Rose receives a disturbing call.

Reunited at last, Peter and Rose race to intercept Warren. Noor weighs using her access to classified Iranian intelligence for her own gain.

Peter and Rose infiltrate a party at the Iranian ambassador's home, arousing Javad's suspicion. Tomás and Markus lock horns over the Foxglove plan.

Breaching one of the most high-security locations in New York puts Peter's skills to the test. Rose and Dr. Cole enact a daring plan to stop Markus.

With time running out, Peter and Rose scramble to prevent a mass casualty event. Catherine floats an intriguing proposal.