Overview
"The Sound of Drums" is the twelfth episode of the third series of the revived British science fiction television series Doctor Who. It was broadcast on BBC One on 23 June 2007. It is the second of three episodes that form a linked narrative, following "Utopia" and followed by "Last of the Time Lords".
In the episode, set in the 21st century, the alien time traveller the Master (John Simm) uses a network of mobile phone satellites to hypnotise the world and influence the population of the United Kingdom into electing him Prime Minister. Following the election, he makes contact with an invading race he calls the Toclafane.
Plot
The Tenth Doctor, Jack, and Martha escape the Futurekind by using Jack's vortex manipulator to return to present-day London. They quickly learn that the Master has taken on the persona of Harold Saxon, and is the newly elected Prime Minister. The Master has created a phone network called Archangel which subliminally influenced the population to vote for him. After his election, he kills his entire cabinet with poisonous gas and a reporter who was investigating his fake identity. The three narrowly avoid a bomb placed in Martha's flat and learn that Martha's family has been arrested. The Master contacts them to gloat about his seeming victory, and reveals that the three are wanted criminals. He also led Jack's team into "a wild goose chase in the Himalayas", guaranteeing no help from them.
Hiding in an abandoned building, the Doctor uses parts of Martha's laptop and his TARDIS keys to create perception filters so they can move about unnoticed. He explains some of the Master's past and tells them how, as a child, the Master looked into the time vortex and was driven mad. They see a TV report that the Master is planning to reveal humanity's first contact the next day with an alien race known as the Toclafane. UNIT takes over the meeting and moves it to the flying aircraft carrier Valiant. The Master accepts the changes and boards the Valiant with his wife Lucy. The Doctor, Martha, and Jack teleport aboard and discover that the TARDIS has been converted by the Master into a Paradox Machine that is building up power to be activated at the appointed time of first contact.
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