CSI: Crime Scene Investigation, Season 6

[At a community meeting, in a church]

Grissom:
Hello. My name is Doctor Gil Grissom. I'm the night shift supervisor for the Las Vegas Police Department's crime lab. I'm not a police officer, I'm a scientist.

Shooter's Brother:
You work for the cops, that makes you a cop. You're not on our side.

Grissom:
Actually, I'm a forensics expert. My job is to identify, collect, and examine physical evidence from a crime scene to determine who did what to whom and how did they do it. I've been asked to come here today by the Mayor and Sheriff Berdic to present our analysis of the evidence in this case to your community.

Shooter's Mom:
Why here? Why should we believe your evidence?

Grissom:
Physical evidence cannot be wrong; it doesn't lie. It's not influenced by emotion or prejudice, it's not confused by the excitement of the moment. I'm here [looks up] in God's house to explain to you the truth about exactly what happened the other day.