At more than the halfway point of this 10-episode TV version of the From Dusk Till Dawn movie, we finally arrive at the south of the border biker bar in which our bank robbers, and their family of hostages, ultimately uncover a den of vampires. In this week’s episode six, I’m also guessing they encounter Eiza Gonzalez, doing her snakelike dance number as Santanico Pandemonium. If you saw the movie, you know that performance, by Salma Hayek, was an absolute highlight. How will it compare here? And will the same music, “After Dark,” be used?