Thomas must put his personal feelings aside as the team track down Begovic before she and her extremist compatriots strike again.
Having faced a humiliating defeat at Octavian's hands, Mark Antony is left broken; facing almost certain death, Cleopatra has one final trick up her sleeve; Pullo and Vorenus are reunited for a final time.
Lewis and Hathaway must trawl through Ancient Greek clues to find the murderer of two prominent figures from Oxford University.
By the shores of Lake Silencio in Utah, all of time and space hang in the balance, for this is the day The Doctor dies.
The desperate search for Melody Pond sees the TARDIS crash-landing in 1930s Berlin. There, The Doctor comes face-to-face with the greatest war criminal in the universe, and Hitler. Friendships are tested to their limits.
