sounds like a sitcom. >> at times it was. >> eventually nikki moved out, remarried and had two more daughters with her third husband, matt lieli, a new yorker she met online. >> he made my sister laugh so we would all laugh. >> after brief stays in oklahoma and mississippi, nikki and matt returned to georgia and settled into this house on sidney's cove in lawrenceville. nikki, a well-regarded corporate money person, was the primary breadwinner. matt, a computer guy, ran a small business out of the house. >> he started going to, like, government surplus auctions and buying these big palettes of old used computer parts then rebuilding them and selling them on ebay. >> by this ring -- >> when it was amy's turn to get married in 2003, her big sis was there serving as matron of my best friend, my confidante, my sister, to amy and dylan. >> later this night, boogying to, what else, "we are family." ? we are family ?? >> as the years passed, the sisters remained close. in late june, 2011, amy organized a spa day out for nikki and her three girls. >> no boys allowed. we're going to have a girl's >> we went to get our nails done. >> da

searchers armed with maps literally beating the bushes around nikki lieli's subdivision for cues as to what might have happened to her. >> keep your eyes open. if you see her, call 911, let them know you've seen her. >> nikki's mother had the job of going door to door, leafletting the neighborhood with fliers with pictures of her daughter. >> i don't think anybody is at home. we'll find out. >> even though southern hospitality may have been in short supply that day. >> get out of here before i call the cops. >> harriet pressed on. >> good morning, sir. my name is harriet garrett. >> what's the camera for? >> my daughter is missing and we're trying to get some news coverage. >> like so many of the volunteer s that day, allison rockwell was looking for her co-worker. >> i loved nikki, she was great. very smart. lots of energy. positive. wonderful. just a wonderful person. >> on the morning of the search, allison recalls she and another colleague from work, a man named derek, were running late. important twist of fate. >> 40 minutes late. everyone else started searching. >> were you given