Carmen is Inspector Stanton Gerrard, a tough detective inspector who takes no guff. (Direct quote from the CSI: NY website.) There's a lot of yelling involved in being this character. This episode, Inspector Javert.... err... Gerrard yells at Mac Taylor about the way he's handling a murder investigation.

In case you're curious - there's no Carmen Finger o' Doom in this episode.

Sigh.

This particular character just screams a lot.

No redeeming qualities whatsoever. What a waste.