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.

Catherine aids Peter's off-the-books investigation into Foxglove while Noor stumbles upon an unexpected encounter. A hijacking spirals out of control.

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

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