A man convicted of heinous crimes, murder, rape and burying a woman alive was killed Tuesday night in Oklahoma.
But it's the way he died that has the world talking.
Officials tried a new cocktail of three drugs to put 38-year-old Clayton Lockett to death.
It was supposed to kill him within a few minutes - but it took 43 minutes for Lockett to die.
He finally died of a heart attack.
In an interview with CNN's Erin Burnett, witnesses to the execution, Chelsea Washington from CNN affiliate KOKH and Clayton Lockett's lawyer, David Autry take us through what happened. And also forensic scientist Larry Kobilinsky tells Burnett why he believes the drugs weren't the problem.