Bath salts cases really are like zombies. They become violent, and seem to lose sense of self (often running naked.) The creepiest part is that there have been stories that a tazer won't bring them down like the naked lady who was attacking a boy. They couldn't get her to stop, tazed her, and she just kept going. They had to kill her to get her to stop. It's pretty scary. Then of course the face eating... all zombie behaviors.