Once Bitten

Once Bitten refers to episode 7 of the Season 8 of the television series Forensic Files] which was broadcast for the first time on July 10, 2003.

Plot summary
During the early morning hours of December 29, 1991, Kim Ancona is murdered in a Phoenix bar. At the crime scene, investigators find a shoe-print, several foreign hairs, and unknown fingerprints.

But they believe the most telling piece of evidence is the bite mark on the victim's chest. Based on his bite pattern, a local postman, Ray Krone, is charged, tried and convicted of murder, but he maintains his innocence. Ten years into his sentence, improved technology yields new information about old evidence, and Krone is exonerated. DNA leads to Kenneth Phillip’s conviction.