Crime: Mercer was convicted for the rape and murder of 22-year old Karen Keeton in Belton, Missouri. At the time of the murder, Mercer had a charge against him of raping a 17-year old girl.
Execution Date: January 6th, 1989
Noted Details: “Tiny” Mercer became the first person to be executed in Missouri since 1965. His execution was carried out in the former gas chamber which was converted to use lethal injection.
Last Meal: None mentioned.