ON 8 April 2002 Ray Krone walked out of prison in Yuma, Arizona, having spent 10 years behind bars, including two on death row. His conviction, for stabbing cocktail waitress Kim Ancona to death, was secured largely on the basis of a supposed match between his teeth and a bite mark on the victim’s breast. Krone always maintained his innocence, and was eventually exonerated when DNA on the victim’s clothes was matched to another man.
The prosecution expert – who was certified by the American Board of Forensic Odontology (ABFO), the professional society for experts in forensic bite marks –…
