The case of Cameron Todd Willingham, who was executed by Texas in 2004, remains both in the news and in the court system. Willingham was put to death for setting a fire that killed his three daughters. Yet fresh doubts linger in this particular case more than a decade later, as the jailhouse informant who testified against Willingham later said he lied on the witness stand to reduce his own prison sentence. The prosecutor in the case was formally accused of misconduct in court last month.