 Grissom, Catherine and Nick investigates a car bomb which resulted in the death of three people, one of whom was an air marshal who rented the car. Due to the imprecision of the detonator, the CSIs conclude that the target may not have been the air marshal but the person who had previously rented the car. The man is a mystery himself, as he seems to be leading a double life. In town, Sara and Warrick works on the death of Amelia, the wife of Myles Reuben who is a famous singer. She was found in her hotel s bathtub while her husband is performing downstairs.