Residual Doubt: Portrait of A Capital Case Investigator Under Arizona law, anyone facing a possible death sentence has a right to a "mitigation investigator." This specialist's job is to find elements in the convicted killer's past to present to the jury in the hopes that they may assign a life sentence instead of the death penalty. Mary Durand is one of these investigators, but as she nears her 60th birthday, she ponders whether it's time to leave the business... Keywords:Death Penalty; Capital Punishment; Arizona Downloads: 12,985 Average rating:(7 reviews)