Harry Saxon becomes Prime Minister and his reign of terror begins – but that's only the start of his ambitions, as he announces mankind's first contact with an alien race, the Toclafane. An audacious plan spanning the whole of time and space begins to close around the Earth, in the penultimate episode of Russell T Davies's Doctor Who.
Martha takes her first trip in the Tardis, all the way back to Elizabethan England. She and the Doctor hear of a series of bizarre deaths and discover that playwright William Shakespeare is being controlled by dangerous witch-like creatures. It seems the time-travelling duo must defeat ancient forces to prevent history from being rewritten.
Trainee doctor Martha Jones has her hands full balancing her medical studies with placating her demanding family. So the last thing she needs is to find that the hospital where she works has been transported to the moon, where it's invaded by an overbearing alien police force. There she encounters a patient called John Smith, who seems curiously at ease with the situation…