Witches are dangerous. They can kill you with a look, or a word. They can send their friend the Devil after you in the shape of a dog or a cat. They can make a clay picture of you, then break it ... and a few weeks later you are dead.
Today, of course, most people don't believe in witches. But in 1612 everybody was afraid of them. Young Jannet Device in Lancashire knew a lot about them because she lived with the Witches of Pendle. They were her family ...