'Madam Secretary' - 11/19/2017 (Photo Gallery)

In the episode entitled "North to the Future," when a Russian dissident flees to the U.S. after contracting smallpox, Secretary of State Elizabeth McCord and retired U.N. Ambassador Kat Sandoval (Sara Ramirez) must work with Russian Foreign Minister Konstantin Avdonin (Yasen Peyankov) to contain the outbreak. (All photos: David M. Russell/CBS)