Billy Dale Stacks, 62, was working as a clerk at a Conoco gas station on Loop 323 in Tyler, Texas, when he was fatally shot during an armed robbery on January 28, 2017, just before 4 a.m. He was taken to a local hospital and later pronounced dead. Surveillance footage showed the shooter, identified as Dameon Jamarc Mosley, fire two shots at Stacks — one to the shoulder and one to the head — then take money from the register, drop it on Stacks’ body, retrieve it and flee.

Investigators said Mosley planned the robbery with two accomplices, Kedarius Oliver and LaMarcus Hannah. Mosley was later convicted of capital murder in November 2019 and sentenced to death by a Smith County jury. Oliver pleaded guilty to murder and received a 35-year sentence; Hannah pleaded guilty to a lesser murder charge and was also sentenced to 35 years. The case drew attention for the crime’s brutality and the legal arguments over Mosley’s sentence, including defense claims about his intellectual disability.