On our entertainment-themed Round 2 this week, we're closing in on the end of season 1 of Veronica Mars, but not without a couple more cases of "Bad Things Happen to Neptune Students We've Never Heard Of." Plus, Terri has an intriguing theory about who killed Lilly Kane. Maybe we'll find out if she's right next week on episode 20, "M.A.D.," or 21, "A Trip to the Dentist."