Updated at 5:50 a.m. Friday with additional reporting. Reporting from KRCU's Jacob McCleland was used in this story.
The anesthetic that caused the overdose death of pop star Michael Jackson is now the drug for executions in Missouri.
The Missouri Department of Corrections is switching from its longstanding three-drug method to a single drug, propofol, which has never been used in an execution in the U.S. That's causing a stir among critics lijke Death Penalty Information Center director Richard Dieter.