so, then, how's laura rideout moving to north carolina? uspicious of laura from the moment she arrived at her brother's townhouse. remember, the day craig went missing, laura was there, and she was inside, tidying up. >> when i get in and i open the sliding glass door, it's laura standing in his kitchen, cleaning. >> that's kind of -- that would be odd. >> it was odd. in my head, i'm thinking, what are you doing here? >> cleaning up a crime scene, that's what investigator bolton suspected. in fact, the boys admitted it was their mother who gave them the bags of bloody clothes. >> it was just something my mom told me to take -- >> when did your mom tell you to do that? >> it was this morning. >> did she give you the bag? >> yeah. >> just hours after arresting the two sons, investigator bolton headed to the home that laura shared with p.j. tucci. >> i was stunned. i was absolutely stunned. >> security video from days before craig rideout's murder leads to a sickening revelation. coming up -- >> diabolical plan is forming here. >> it appears t