On the evening of December 7, 2020, a house fire on Arnault Branch Road in the unincorporated community of Cadet, Missouri, led firefighters to find two bodies inside. Victims were 53-year-old Tammy Marie Feverston and her 11-year-old grandson, Trevor Cook. Autopsies and forensic work showed both had been shot before the blaze was set, and investigators concluded the fire was intentionally started to conceal the killings.

Evidence gathered at the scene and information developed by the Mineral Area Major Case Squad suggested an intruder entered the home, fatally shot the two victims, stole items including cell phones, then ignited the structure. On December 9, 2020, police identified a 50-year-old Cadet-area man, Andrew Lige Richards, as a suspect; after a vehicle pursuit he crashed on John Smith Road and was taken into custody. He was charged with two counts of first-degree murder, first-degree arson, first-degree robbery, four counts of armed criminal action, possession of a controlled substance and resisting arrest for a felony.

Anyone who knew Tammy or Trevor, or who has information about the incident or items taken from the home, is asked to come forward.