A spoiled heiress's red carpet rival, personal assistant and musician boyfriend are the prime suspects when she's found murdered. The victim is found dead in her bathtub during her own star-studded party, and the CSIs have their work cut out for them when each of the A-list suspects has a motive to kill her. Meanwhile, Horatio tells Delko that he and Marisol are getting married as soon as possible, but extenuating circumstances could ruin their special day.