(Quick flashback. Brass: And it was okay for a student like this victim to return to the school property to use the restroom. CSI -- LAB]
(GRISSOM is along in a room. Grissom: Shot him in the back. HIGH SCHOOL - MEN'S BATHROOM -- NIGHT]
(BRASS is questioning the School's Principal while GRISSOM is busy looking at the bullet lodged in the mirror.) He stops halfway and issues a final warning to SARA and NICK.) Recently voted class clown. Sara: These ... are the handles from the bag that he was found in. Sara: When was that? There he is. WARRICK is holding the spool of pink string and is standing on the opposite side of the bathroom from GRISSOM who is holding the end of the string against the bullet hole in the wall. We're looking for a coward.
Plan: A: the school bathroom; Q: Where was the student found dead? A: The CSI team; Q: Who is called to investigate the murder? A: Grissom; Q: Who is convinced that the killer is a classmate? A: sophisticated new equipment; Q: What does the CSI team use to track the scent of the killer? A: Army; Q: What branch of the military did the veteran belong to? A: a bag; Q: What was the body found in? Summary: When the class clown at the local high school is found murdered, the CSI team is called to investigate the student, who is also the top jock on campus, is found shot in the back in the school bathroom. The CSI team quickly discovers that the victim was also the class bully, and Grissom is convinced that he is looking for a classmate who was finally pushed to end the abuse once and for all. The team uses sophisticated new equipment to track the scent the killer left behind. Meanwhile, Sara and Nick investigate a case involving a severely decomposed body of an Army veteran found in a bag.