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GRISSOM: The dirty little secret of bombs is how easy they are to make and use. Our murder weapon's here someplace in a thousand pieces. We have to find it and put it back together again.

WARRICK: Where do we start?

GRISSOM: If it's not growing pick it up. We cart everything we find back to the lab.

SARA: And then what?

GRISSOM: Stay curious.

(GRISSOM turns back to look through the debris. SARA stares at him for a moment still unsure of exactly what they're doing, then turns to look at CATHERINE.)

SARA: Can you fill in the blanks?

CATHERINE: Bombs explode. Weird thing is their components survive the explosion. If we can piece together this bomb, we're closer to finding who did this. So, Warrick, when you're photographing this debris can you, uh ... ?

WARRICK: Uh, I know -- looky-loos.

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