What happens when the evidence of a crime is literally in shreds? That's the case on the CSI episode "Bump and Grind," as previewed here.
Added:

CSI Season 11 Episode 7 Quotes

Believe me I get it. Two ships passing... it takes a while for the fog to clear.

Sara

Nick: What's the code for suspicious ooze?
Ray: 666... well, at least, the primordial variety. Stuff of heaven and hell.