This British medium attracted MI-5's attention because besides knowing a lot about those she was fleecing, she seemed to know a lot about military matters during WWII. She was busted when someone took a flash camera into a seance. Helen Duncan was the last woman convicted under the Witchcraft Act.
Fascinating! With some creativity and a certain natural psychologist ability, lots of people could make it as “mediums” in a credulous era. I sometimes think that Sally the Daughter, who scored very high on “Influencer,” is a witch.