the sign says PJay.  vegas is in the distance, so they are actually not in vegas, they are in hollywood or something eatin at a diner possibly dinner.  Capt Brass is gone, and Sarah and Grissom hook up FINALLY.  Also Katherine takes on a part time job as a dancer (Like in her younger days)  and last but not least, there is a crime, and the csi team has to figure out the clues to solve it.  And if you don't believe me, you can ask Santa Claus or my unicorn =))\n\n\nPS.  Sorry I am not at work allllll night long.