There is a long and remarkable article in the current New Yorker about a man who was executed in Texas in 2004 for deliberately setting a fire that killed his three small children. Rigorous scientific analysis has since shown that there was no evidence that the fire in a one-story, wood frame house in Corsicana was the result of arson, as the authorities had alleged.

In other words, it was an accident. No crime had occurred.

Cameron Todd Willingham, who refused to accept a guilty plea that would have spared his life, and who insisted until his last painful breath that he was innocent, had in fact been telling the truth all along.

It was inevitable that some case in which a clearly innocent person had been put to death would come to light. It was far from inevitable that this case would be the one. “I was extremely skeptical in the beginning,” said the New Yorker reporter, David Grann, who began investigating the case last December.

The fire broke out on the morning of Dec. 23, 1991. Willingham was awakened by the cries of his 2-year-old daughter, Amber. Also in the house were his year-old twin girls, Karmon and Kameron. The family was poor, and Willingham’s wife, Stacy, had gone out to pick up a Christmas present for the children from the Salvation Army.