Pricking

During the height of the witch trials of the 16th and 17th centuries, common belief held that a witch could be discovered through the process of pricking their skin with needles, pins and bodkins – daggerlike instruments for drawing ribbons through hems or punching holes in cloth.

[1] The mark alone was not enough to convict a person, but did add to the evidence.

[2][3][4] Professional witch finders earned a good living from unmasking witches, travelling from town to town to perform their services.

Hollow wooden handles and retractable points have been saved from these finders, which would give the appearance of an accused witch's flesh being penetrated to the hilt without mark, blood, or pain.

Through sleight of hand, the sharp end could be used on "normal" flesh, drawing blood and causing pain, while the unseen dull end would be used on a supposed witch's mark.