there were printers and copiers, invel lopes, expected to be there too. as you went around and found those things, what were you thinking? >> we really want that one really, really good piece of physical evidence. >> what you found so far wasn't it. >> no. >> okay. so specifically what did you find of probative value? anything? >> i didn't find anything. we took his cell phones. there were two cell phones in the car. >> but basically nothing. >> no. >> detective ruiz was assigned to the dining room, which clearly doubled as an office. what did you see? >> i saw a lot of paperwork. there was lots of paperwork. files everywhere on the table. >> room was full of paper. >> yes. >> the sun was just breaking over the horizon. long rays of morning light angled through the blinds. detective ruiz was poking through all those papers and office supplies when a curious thing caught his eye. it was the way that almost horizontal beam of light glanced off a blank sheet of paper. >> i noticed that the white