Charles Earl Lewis III, 67, and his wife Grace were shot and killed at their farm near Bonne Terre, Missouri, on September 21, 1993. Charles was mowing the lawn when Brent, armed with a .22 rifle, ambushed him and fired six shots. Grace, who had been on the telephone with their daughter, went outside after hearing the shots and was also shot by the teenager. William is reported to have followed Grace into the house, covered her head with a garment bag, carried her outside, and ordered one final fatal shot.

The bodies were wrapped in a tarp, moved to property owned by William Rousan, buried in a shallow grave, and concealed with concrete and horse manure. The killers then returned to the Lewis home and stole a VCR, jewelry, a saddle, and cattle. The couple’s disappearance went unexplained for about a year until tips in September 1994 led investigators to the graves and to the three suspects. What additional information about the crime or its background might help explain how this plan was organized?