Grissom: (to Greg while looking at a gun) What's this blue stuff on the slide and the grip? (Greg doesn't answer) It's okay to say you don't know, Greg. That's why we have a trace lab.
Grissom : (to Greg while looking at a gun) What's this blue stuff on the slide and the grip? (Greg doesn't answer) It's okay to say you don't know, Greg. That's why we have a trace lab.
http://www.tv-quotes.com/shows/csi-crime-scene-investigation/quote_24673.html
