Gheree O'Bannon

While Elizabeth oversees a mission to track down the culprits behind a uranium heist in Eastern Europe, she also contends with highly sensitive issues in Saudi Arabia, including the apprehension of two American teenage girls who intended to join a terrorist group, that threatens to dismantle an important arms deal. Nuah Ozryel guest stars. (TV-14 L, V)

Elizabeth is attending a summit in Montreal to resolve territorial claims of the North Pole when an activist group detonates a bomb and she can't locate Jason and Piper. Also, things take a turn for the worse when Elizabeth learns that Russia was involved in the bombing, and Henry helps one of his students work through a difficult decision.

Elizabeth goes head to head with a U.S. governor over the state’s new policy of separating unauthorized immigrants from their children. Also, she and Henry plan to renew their wedding vows, in a special two-part episode.

Jack (Sebastian Stan) and William (Dylan Baker) make plans for Jack to take his father’s place as King of Gilboa. To everyone’s surprise, Silas (Ian McShane) is alive and David (Chris Egan) escapes Shiloh to warn Silas about the chaos to come. Also stars Allison Miller, Susanna Thompson and Eamonn Walker.