Some Halloween metaphors suggested by E. Kent Winward of the Standard Examiner describe the law as a Vampire (coming out at night and sucking on people's life blood) and "The Vampire Code" (the garlic, cross, sunlight and stake that keeps predators at bay). Taking a more balanced view, he adds that the law is a Werewolf (functional most of the time but known on occasion to act like a 'howling, drooling wolf').
Winward also describes the law as a black cat, a witch, skeletons, ghosts and other seasonal beings.
Similes, another form of figurative language that compare things rather than conflate them, feature a number of times in "Spirits of the Dead," a Halloween-appropriate poem by Edgar Allen Poe. An example is his comparison between the light from stars and "hope to mortals given". He ominously goes on to add that their "red orbs ... shall seem a burning and a fever / Which would cling to thee for ever."