Texas is set to execute Robert Roberson on Thursday for a crime he says he didn't commit. The case revolves around the death of his 2-year-old daughter, Nikki, in 2002, and the controversial diagnosis of shaken baby syndrome. This would be the first execution of its kind in the U.S.

The diagnosis, which has been called into question in recent years, led to Roberson's conviction in 2003. Doctors and law enforcement quickly pointed to a violent shaking episode as the cause of Nikki's death. However, medical consensus has since shifted. Other conditions, such as infections and pre-existing illnesses, can also cause the same symptoms.

Since Nikki's death, over 30 defendants in similar cases have been exonerated. Roberson maintains his innocence, claiming he found Nikki unconscious after she fell out of bed. Experts argue that the jury wasn't presented with all the facts, including Nikki's previous health issues and Roberson's autism spectrum disorder.

Despite numerous appeals and a great deal of support from scientists, lawmakers, and advocacy groups, Roberson's execution could still proceed. The Texas Board of Pardons and Paroles unanimously declined to recommend clemency, and Governor Greg Abbott has yet to make a decision.

The Case of Robert Roberson: A Look at Shaken Baby Syndrome

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