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A (PDF) released Tuesday by Dr. Craig Beyler to the Texas Forensic Science Commission . This finding is important because the children were not the only people killed as a result of that fire. Their father, Cameron Willingham, was executed in 2004 after being convicted of murdering them by intentionally setting the fire.

Willingham was largely convicted based on testimony of arson investigators whose methods even at the time of the trial had been thoroughly discredited.

This is not the first time experts have examined Willingham's case. Several arson investigators and another set of experts (PDF). These experts all found exactly what Dr. Beyler, who was hired by the State of Texas, found. The science used to convict and execute Willingham was bogus and the fire may well have been accidental.

We've blogged about other cases in which junk science (and its practitioners, junk scientists), have sent innocent people to death row. Ernest Willis, also sent to Texas' death row because of an "arson murder," was luckier than Willingham. Texas had not yet managed to put him to death before experts concluded that the fire was not intentionally set. Willis was exonerated while still alive. Willingham was not so fortunate.