And that was all we knew. Narrator by this time, codis, the national dna database, was in full swing, but the Dna Sample from individual a didnt match anyone in the system. Years and years went by with no luck, no matches in the database. Narrator in 2010, Dna Analysts turned to the letters. Using touch dna, they were able to lift a genetic profile, but it did not match the dna of individual a. In an attempt to generate more leads, copies of the letters were broadcast and published. Amazingly, someone recognized the handwriting. A potential suspect was finally identified and confronted. He readily admitted that he wrote the letters and apologized for doing so. Narrator and the letterwriters dna