Mike Thomson presents the series using documentary evidence to throw new light on past events. Mike uncovers papers which accused the BBC of biased reporting as Iran descended into revolution in 1978 and 1979. The documents show that the BBC's Persian Service found itself attacked on all sides, with the most vociferous critics claiming that the Corporation was not simply reporting events but influencing them in favour of regime change. As Ayatollah Khomeini sat in exile in Paris, the BBC stood charged with galvanising the radical cleric's supporters and acting as his mouthpiece in Tehran. Featuring interviews with then Foreign Secretary Lord Owen, the then Iranian Ambassador, senior BBC figures and academic experts.