Season 3 — Episode 12

The Sound of Drums

Harry Saxon becomes Prime Minister, and his reign of terror begins. This is only the start of his ambitions, however, as he announces humankind’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. (Guest star: John Simm – Life On Mars, State Of Play)