Smith was convicted of capital murder in the Nov. 8, 1994, fatal shooting of Huntsville store clerk Casey Wilson. A jury voted 7-5 to recommend a sentence of life imprisonment, but a judge overrode that recommendation and sentenced Smith to death. 
Murder of Casey Wilson
Wilson was pistol-whipped and then shot in the head during the robbery.  Surveillance video showed Smith entering the store and recovering spent shell casings from the bathroom where Wilson was shot, according to the record. 
Smith ignored his pleas for mercy. Wilson had a newborn infant at the time of his death. 
Smith was pronounced dead at 11.05pm at the Holman Correctional Facility.  He visibly struggled for nearly half of the 30-minute lethal injection, clenching his fists and raising his head at the beginning of the procedure.