Brittany Curran (Fen) shares her favorite behind-the-scenes moments from "Heroes and Morons," and talks about the Muntjac, Fray, and how she worked with her therapist to bring empathy and humanity to Fen's log lady scenes. Plus, it's the return of crackpot fan theory funtime with Clara, and no Brittany episode would be complete without a deep dive into the world of Cheetos.