Richard Dimbleby

When Allied forces liberated the Nazi concentration camps in 1944-45, their terrible discoveries were recorded by army and newsreel cameramen, revealing for the first time the full horror of what had happened. Making use of British, Soviet and American footage, the Ministry of Information’s Sidney Bernstein (later founder of Granada Television) aimed to create a documentary that would provide lasting, undeniable evidence of the Nazis’ unspeakable crimes. He commissioned a wealth of British talent, including editor Stewart McAllister, writer and future cabinet minister Richard Crossman – and, as treatment advisor, his friend Alfred Hitchcock. Yet, despite initial support from the British and US Governments, the film was shelved, and only now, 70 years on, has it been restored and completed by Imperial War Museums under its original title "German Concentration Camps Factual Survey".

The story evolves around a radio panel game show "Twenty Questions." The panel is challenged with an anonymous question. The answer leads to a series of murders in which the killer uses the programme to name his victims in advance. Two reporters spot a link between them and enlist the aid of the panel in trapping the guilty party.

A California commercial pilot sees a telecast in London of an interview with Sir Mark Lodden at his home. The Canadian is convinced that the baronet is a fraud, and he is actually a look-alike actor named Frank Welney.

This fascinating documentary reveals the behind the scenes story of the Coronation of Queen Elizabeth II, drawing on rare archive footage and made using eyewitness accounts of participants and historical experts.

The adventures of two children who runaway to London to see the coronation of Queen Elizabeth.

This episode perpetrated the great Spaghetti Harvest Hoax on April Fool's Day 1957. The filmed report appeared to show a Swiss family harvesting their annual crop of spaghetti which was growing on trees on their farm, talked about the efforts to eradicate the Spaghetti Weevil and discussed the selective breeding that had been required to produce spaghetti of a uniform length. Many viewers believed what they saw and contacted the BBC to enquire how to grow their own spaghetti tree: the advice that they were given was "place a sprig of spaghetti in a tin of tomato sauce and hope for the best".

Current affairs programme, featuring interviews and investigative reports on a wide variety of subjects.