Missouri said it carried out executions using just one drug: Pentobarbital. While other states carried out botched executions in Oklahoma, Ohio and Arizona, Missouri officials pointed out that Missouri didn't use the drug, midazolam, that those states did. Two Corrections officials even said under oath that Missouri would not use midazolam in an execution. Our investigation found out Missouri had used the controversial drug in every execution over the past year. Just as alarming, the state was injecting the drug into the inmates before members of the press were there to witness it.