On the night of 7 September 1936 three men - a university lecturer, a Baptist minister, and a schoolmaster - set fire to a training school for bomber crews being built by the Government on the Lleyn Peninsula, North Wales.

The schoolmaster was D.J. Williams. For this film, made last summer and first shown soon after his death early this year, he retold the story of their action - now a part of Welsh history. 'It was not an act of vandalism but a direct protest in the name of the whole Welsh nation.'