There is a new development in the case of Cameron Todd Willingham, a Texas man who was executed 10 years ago after he was convicted of setting a fire that killed his three young daughters. For years, family members and death penalty opponents have argued that he was innocent. The New York Times is now reporting newly discovered evidence suggests that the prosecutor in the case may have concealed a deal with a jailhouse informant whose testimony helped put Willingham to death. Attorneys seeking a posthumous exoneration for Willingham say they have found evidence that the informant Johnny Webb gave his testimony in return for a reduced prison sentence.