“Lie to Me” is an odd one. Is Ford’s story sad, or is he a creep? Does Buffy essentially murder him when she leaves him in the club, or does she give him what she wants? Is that the same thing? And, on the nitpicky level, did Spike turn Ford on purpose, to torture Buffy? Or did that little bit of vampire mythology—the whole big sucking thing—get a little handwaved, this time around?