Brass (looking at Jesse's polygraph results): Well, the sick bastard is on the up and up. Except your last question. Your "Why"?
Catherine: That they killed the family so they could be together?
Brass: Operator says his respiratory reactions were inconsistent. He's lying.
Nick: We got them both. I don't much care why they did it.
Warrick: I'm with you there.
Grissom: I care. I don't like holes. What are they hiding?