this practice derived from the belief that all witches and sorcerers bore a witch's mark that would not feel pain or bleed when pricked. the mark alone was not enough to convict a person, but did add to the evidence. pricking was common practice throughout europe, but was most prevalent in england and scotland. 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. other specially designed needles have been found with a sharp end and a blunt end. 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.