Greg Sanders, who previously work in the DNA lab to analysis DNA, must work on a case to prove that he can be a CSI. (He failed in the first episode in this season)
Catherine, Warrick and Nick investigate the death of a teenage after a car accident.
Later on, Greg finds out that "Sherlock" commit suicide. But Gil Grissom, his supervisor, finds out that "Sherlock" is murder after he found 7% of morphine in his blood. Greg begins to panic as his thought he will once again failed his test. But actually, he past!
What should I say more about this episode? As I say, EXACTLY WHY I WATCH THIS SERIES. The best episode ever in this season.