Dr. Cox: I found this cheat sheet in the unisex bathroom just outside this hall, so either we have a Matt Damon-type custodian with an extensive knowledge of the central nervous system, or one of you cheated. And since just last week, I saw one of our fine janitors eat a piece of chalk, I'm guessing the latter. He's the deal. You're all going to be locked in this room till one of you comes forward and takes responsibility.