Booth and Brennan are flown all the way to Vegas to investigate a corpse found in the desert. While looking at one that had been there for years, they spot a vulture flying over a fresh one. This leads to the investigation of the death of a young woman who was an extreme fighter. The two of them go undercover. Bones ends up looking incredibly sexy as she takes on the role of Booth's "woman." Along the way, they rub the casino bosses the wrong way and end up with some threat. I thought this was OK but the conclusion seemed a bit too easy. It was a good vehicle for the two stars and I hope they do more undercover work.