there was a probably that the man would commit future acts of violence. >> it's so clear the testimony shouldn't have been put before the jury. >> reporter: the attorney working the case, not just any attorney, she was one of the prosecutors. she is now pushing to get dwayne buck a new sentencing hearing. >> the idea that he would be walked to the execution chamber would you tell this simple hearing boggles the mind. it just doesn't make good sense. >> reporter: walter quijano became a lightning rod six years ago when the death sentences were overturned because of his controversial testimony that race is one of 20 factors that can determine if someone is likely to be a future danger to society. all of them were given new sentencing hearings. all were sent back to death row. dwayne buck was denied a new sentencing hearing but is appealing that decision. from jail, campaign buck