little coffee can anchors had been made there on that trailer. >> reporter: but only this one anchor was found. >> it's clear there was more than one. now, where are those? nobody knows. >> reporter: were the other four used to weigh down laci's body? and though scott said going fishing was a last-minute decision, there were sea charts and maps of the berkeley marina on his computer from early december. and scott told police he spent time at his warehouse office on the day laci disappeared. they couldn't help but notice how secluded the place was. >> this is very isolated back here, and especially on a christmas eve. >> if you wanted to get away with something, this is a place you could do it. >> yeah. >> reporter: like move a body into a boat, thought the detective. >> we have a window here in the front and note that the screen is ajar.