With the group headed for Washington D.C., they encounter a suspicious priest who declares that he's never killed a walker OR a human. Suspicious, right? It's the apocalypse, like. Of course this isn't true. Anyway, the group decides to spend the night and find lots of suspicious evidence to suggest that the priest isn't all he claims to be. Imagine that - a priest that isn't all he claims to be. That'd never happen in the real world.