and with them, crime scene investigator steve gatlin.o crime scene techs go work on missing persons normally? >> not normally, but this was something a little different. this was a person who just graduated from law school that had everything going for her and wouldn't just up and disappear for no reason. >> she was a social animal, and she would -- you know, they don't just vanish, right? >> exactly. she had friends, family she keeps up with. she had a career that was about to blossom and had all this going on, and to just disappear with no trace of not talking to anyone was unlike her. >> so gatlin looked up at lauren's front door, second floor, left side. nothing seemed amiss. out front, a garbage truck lumbered up. but blocked by the police cars, was unable to empty the complex's trash bins. the truck moved on. by then, lieutenant gatlin was in the apartment looking around. >> it just looked like somebody walked out and shut the door. >> puzzling. the day was hot already. a humid breeze scuttered across the yard. >> when we started c