Missing child posters featuring the slain girl's face, framed by her thick brown bangs, still plaster nearly every utility pole along the mile-long route from her elementary school to her home.
Somer was last seen alive walking along the sidewalk in front of a vacant house, and authorities said Friday that they're searching for anyone who saw what happened to the 7-year-old after that. Investigators sifted through evidence from the vacant house and the Georgia landfill where her body was found Wednesday.
So far, no witnesses have come forward to say they saw Somer attacked or abducted, sheriff's spokeswoman Mary Justino said.
"What we've been trying to figure out is who frequents that area, because obviously it's more than just the people who live there," she said.
The child's teary but resolute mother appeared on television interviews and warned her daughter's killer: "We'll get you." She pleaded for anyone with information to "please, please tell" police.
The day after the child's body was identified, authorities said they had ruled out all 161 registered sex offenders who lived within a 5-mile radius of Somer's home. Despite doggedly pursuing hundreds of leads, police have not made an arrest.
Somer vanished while walking home from her elementary school on Monday afternoon. The vacant house is on her route through a heavily populated, well-manicured neighborhood, and witnesses last saw the girl alive in front of it. She had gotten upset as she walked home with other children Monday and ran ahead of the group. Somer never made it home.
Neighbors said they were used to watching out for each other's children as they walked to and from school.
"Everybody knows everybody here. If there was a stranger on the street, we'd be looking at watching where they were going, seeing what they were doing here," said Monica Loeb, a family friend of the Thompsons.
Somer's mother, Diena Thompson, had a friend greet her children as they came home from school Monday because she was working, according to a police report. When Somer didn't arrive with the other children around 4 p.m., the friend sent Diena Thompson a text message. She raced home, and flagged down a passing police officer while she, her other children and her boyfriend scoured the neighborhood.