Ross and Carrie grit their teeth as they round the bend on the last few classes in Bob Larson’s exorcist school. In this episode, they learn how to act like a therapist without being one, and how to protect yourself from lawsuits should anyone hold you to account. Plus, they study Bob’s distinctions between possession, schizophrenia, bipolar, borderline, and dissociation. (Spoiler: it’s not very clear!)