The terror threat escalates as Jack heads for the Embassy with the CIA closing in on him. Margot asserts her authority with unthinkable force; Heller makes an impassioned speech to Parliament; Kate takes matters into her own hands.

Cast: Kiefer Sutherland, Gbenga Akinnagbe, Emmanuel Akwafo, Will Austin, John Boyega, Benjamin Bratt, George Choat, William Devane, Mandeep Dhillon, Tate Donovan, Michelle Fairley, Charles Furness, Cynthia Garbutt, Jay Heath, Giles Matthey