Glampers and rangers are being attacked in the woods so it's up to Sam, Dean and Bobby to hunt down the evil culprit. It doesn't turn out to be the Jersey Devil, a werewolf or a wendigo. "How to Win Friends and Influence Monsters" marks the return of the Leviathans. Plus, Dean's behavior changes drastically after munching on a delicacy known as the Turducken Slammer. Turducken = Turkey, Duck and Chicken. And apparently features some sort of special sauce that looks like grey ooze. So gross.