CORSICANA, Texas -- Strapped to a gurney in Texas' death chamber earlier this year, just moments from his execution for setting a fire that killed his three daughters, Cameron Todd Willingham declared his innocence one last time.
"I am an innocent man, convicted of a crime I did not commit," Willingham said angrily. "I have been persecuted for 12 years for something I did not do."
While Texas authorities dismissed his protests, a Tribune investigation of his case shows that Willingham was prosecuted and convicted based primarily on arson theories that have since been repudiated by scientific advances. According to four fire experts consulted by the Tribune, the original investigation was flawed and it is even possible the fire was accidental.
Before Willingham died by lethal injection on Feb. 17, Texas judges and Gov. Rick Perry turned aside a report from a prominent fire scientist questioning the conviction.
The author of the report, Gerald Hurst, reviewed additional documents, trial testimony and an hourlong videotape of the aftermath of the fire scene at the Tribune's request last month. Three other fire investigators--private consultants John Lentini and John DeHaan and Louisiana fire chief Kendall Ryland--also examined the materials for the newspaper.
"There's nothing to suggest to any reasonable arson investigator that this was an arson fire," said Hurst, a Cambridge University-educated chemist who has investigated scores of fires in his career. "It was just a fire."
Ryland, chief of the Effie Fire Department and a former fire instructor at Louisiana State University, said that, in his workshop, he tried to re-create the conditions the original fire investigators described.
When he could not, he said, it "made me sick to think this guy was executed based on this investigation. ... They executed this guy and they've just got no idea--at least not scientifically--if he set the fire, or if the fire was even intentionally set."