CSI: Crime Scene Investigation, Season 2

Calleigh:
(holding up a shell casing) Normally you can spot a GLOCK casing from about a block away! (examining it) Rectangular firing pin impressions. This isn't fired from your chief's weapon! (realises she hasn't introduced herself) Oh! By the way! I'm Calleigh Duquesne! (before Catherine can speak) Don't ask me how to spell it! (sees the look on Catherine's face) Southern!

Catherine:
Well I'm southern too! (means the country) Nevada!

Horatio:
(laughs at Catherine's comment which earns him a jealous look from Calleigh)

Calleigh:
Do you have a theory on how the mother and girl ended up here from Las Vegas?

Catherine:
We don't work theories! (notices Warrick checking out Calleigh) Do we, Warrick?

Warrick:
(snapping back to reality) No, just the evidence!

Calleigh:
(laughs) Well, we're a bit more fanciful down here. Aren't we Horatio?

Horatio:
I'd say that's a fair point!