What is this? Special Guest Star Blair Waldorf from Gossip Girl playing … a Gossip Girl? Special Guest Star That Guy From Party Down Who Is Now On Community playing Hot Young Idealistic Teacher Who Still Gets Students Interested In History? What after-school special could be in store for us in this week’s Mystery of the Week? Oh, only that Blair (I mean, Carrie) has publicly accused Hot Young Teacher of dodging her calls because they had a pregnancy scare? Veronica doesn’t buy any of it, because she now loves the Huns and Hot Young Teacher gets all the credit, plus Carrie is a bitch. Veronica Mars starts her investigation.