`Duncan, a medium who conducted seances across Britain, was arrested at a time when officials feared details of the upcoming D-Day landings in France could be revealed.
She disclosed — allegedly through contacts in the spirit world — the sinking of two British warships long before the news was officially made public.
She also told the parents of a missing sailor that his ship, HMS Barham, had sunk. That was true, but to preserve morale, the sinking was not announced.
Found guilty of witchcraft, Duncan was jailed for nine months.
Martin said wartime leader Winston Churchill called the conviction “tomfoolery.”‘