Salena Qureshi

A U.S. submarine is hacked. Dalton and his team stumble upon a piece of Patricia's past and Patricia heads to Turkey to confront one of her most epic demons.

Secretary of State McCord decides to host a holiday party with the intention of persuading senators about a landmine treaty. Meanwhile, Henry searches for evidence, to prove that the senate majority leader exchanged information with the Russians.

The 20th anniversary of the embassy bombing in Mali has emotions running high and Elizabeth must decide if sanctions should be lifted against the country deemed responsible. Henry tries to help Jason break up with Piper.

When a Russian dissident flees to the U.S. after contracting smallpox, McCord and retired U.N. Ambassador Kat Sandoval must work with Russian Foreign Minister Konstantin Avdonin to contain the outbreak.

Elizabeth attends a summit in Montreal to resolve territorial claims on the North Pole. An activist group detonates a bomb. Elizabeth learns that Russia was involved in the bombing. Henry helps one of his students work through a difficult decision.