In “Dead Billy Dead, Part 5,” Billy learns that being turned into a vampire pales in comparison to the horror he faces as the subject of a living autopsy. And in Part 5 of “Juarez,” the town is quiet. Bingo's busy in the basement. Lex gets antsy. A meeting in the middle of nowhere goes bad. Mrs. Acosta speaks. Also, life advice from Lex: how not to kill a vampire and how not to get pulled over.