In 2009, the Observer’s Dave Mann wrote a four-part series investigating flawed arson cases in Texas. Dave found compelling evidence that three men had been wrongly convicted based on junk science that mistook accidental fires for arson. Dave later investigated alleged wrongful convictions based on flawed blood spatter and hair follicle evidence. You can also read on this page Dave’s coverage of Texas’ investigation into the infamous Cameron Todd Willingham case. Willingham was executed in 2004 on arson evidence that has since been debunked.