>> a little bit of science, a little bit of art. >> luckily for investigators, if the fire had burned just a little longer, it wouldn't have been possible to get this image. >> another 15 minutes of fire, and it would have been a very different case. >> the image was released to media outlets throughout the region. three days after the crime, a woman from harrisburg, pennsylvania, called saying the drawing resembled her boyfriend, 26-year-old wesley person. >> she commented that the composite did not depict an earring that was in his left ear. that was a feature i had intentionally left out of the composite. >> investigators were already familiar with wesley person. >> this wasn't the first time i came across wesley person. i dealt with wesley person about six years before this. i was the prosecutor of wesley person for a drug trafficking case. >> person's prints were on file from that arrest and were compared to partial prints that