her name was syllania edwards.e website, she'd been a 13-year-old runaway from a group home in lawton, oklahoma in 2003. and that's what we're trying to figure out. >> possibly the killer? >> don't know. i have no idea how she got here. >> reporter: so detectives started checking with police departments and jails throughout the southwest on the hunch that syllania, as young as she was, might have been entangled in a prostitution circuit that shuttles women from city to city. >> what we see very often is the women involved in prostitution work in what's called the circuit. so they'll move from albuquerque to phoenix to las vegas to los angeles and maybe not return on that circuit for several years. >> reporter: it was in denver, another city on the circuit, that detective todd babcock hit paydirt. >> at one point syllania had been arrested up in the denver area for prostitution, going by a different name at the time. had been booked. they were able to get me a booking photograph of what syllania looked like around t