It was two days before Christmas 2022 and Luis Manuel Casillas, a 29-year-old Houston mechanic and father of two, had just finished repairing a truck for a couple of brothers. He charged them $500 for the job.
Instead of paying, the men forced Casillas on his knees and took his life with a firearm.
Nearly three and a half years later, one of the men accused in the execution-style attack has learned his fate.
