 Inside the box, Nick hears cracking noises; thinking it to be a rescue effort, he starts to belt out "Lucky Too", the song which he sang in the car at the start of the episode.However, when the CSIs open the box that they found, they find that it is only a prototype, containing a dead dog.Nick looks around inside his coffin and realizes that the cracking noises are the result of his shooting earlier; the box is breaking apart.