Grissom, Catherine and Nick investigate a car bomb which resulted in the deaths 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 work on the death of Amelia, the wife of Myles Reuben, a famous singer. His wife was found in her hotel's bathtub while Myles was performing downstairs.