''Imagine: it's the year 1600 and you've lost your precious silver spoons, or maybe they've been stolen. Perhaps your child has a fever. Or you're facing a trial. Maybe you're looking for love or escaping a husband. What do you do? In medieval and early modern Europe, your first port of call might have been cunning folk: practitioners of "service magic." Neither feared (like witches), nor venerated (like saints), they were essential to daily life....