I'm looking for a CSI episode when one of the csi's gets pulled over, a girl, and becomes a suspect in a murder.

Okay my parent used to watch CSI when i was little and I faintly recall a CSI where one of the female csi's is pulled over and is a prime supect for I belive it was her ex boyfirend that worked as a clean up crew for the csi's I think. If anyone can help me out I'd greatly aprriciate it!