arson case that was investigated prior to the development of the science can question the reliability of those convictions. when we have an exoneration whether it s through dna or through people coming to their senses about arson and somebody let out of prison that s been in there for 17 years, that s the judicial equivalent of a train wreck. another texas man, cameron todd willingham was convicted of arson using the same fire investigation techniques that center nest willis to death row. based on an independent invest gagd, fire analyst john lantini and others in the field strongly believe the willingham fire was accidental. unlike willis, ilingham never got a chance to successfully challenge the science used to convict him. he was executed eight months before willis release. once the death sentence is executed that person is gone. there s no way to unring that