He was called "The Snaggletooth Killer." His crooked teeth sentenced him to death row. But Ray Krone was innocent.

In 1991, bartender Kim Ancona was brutally murdered at the CBS Lounge in Phoenix, Arizona. Police arrested Ray Krone—a mail carrier with no criminal record—based primarily on bite mark evidence that a forensic expert claimed was "100% certain, better than a fingerprint."

Ray was convicted. Twice. He was sentenced to death. He spent over 10 years in prison, including time on Arizona's death row, before DNA evidence proved his innocence and identified the REAL killer: Kenneth Phillips, who had been living just 600 yards from the crime scene the entire time.

This case is personal for Ed—he was the associate producer on the original Forensic Files episode "Once Bitten" back in 2003. It was his very firs ...