yes. >> reporter: scott had told brocchini that laci knew about the boat.t sharon had no idea that scott had recently bought a used 14-foot gamefisher? >> the light didn't just go on in my head and say, "oh, he killed her." no it didn't. i treated him like a husband and the husband of a missing person, but i had suspicions. and i asked him to take me to the boat. show me the boat. >> reporter: very late that first night, the detective and scott went to scott's warehouse, where he worked and kept his boat. you came here that night, right? >> yeah. >> reporter: what did he tell you when you came here and you wanted to look inside and you had your flashlight out, and stuff? >> he said, "there's no electricity." >> reporter: no lights, which was a lie. >> so i just said, "open the door and i'll put my headlights in there." >> reporter: to the detectives it all smelled bad. so they did the things detectives do. they got a wire tap on scott's phone, hid a g-p-s under his car, and they watched him constantly. sometimes, they noticed he watched them, too. >> i was