Spiritualist, medium (well large actually, she weighed in at over 22 stones (that's over 300 lbs to any reader from the USA)) and the last person in Britain to be tried and sentenced under the 1735 Witchcraft Act.
Born in Callander in 1897, the daughter of a cabinet-maker, Helen Duncan was a show woman who travelled throughout Britain, holding regular séances during which she would produce the forms of dead people by emitting a cloud-like substance - ectoplasm from her mouth. These spirits were said to appear, talking and actually touching their relatives.
It was during the years of the Second World War that Duncan's activities attracted the attention of the Establishment.