On December 10, 2003, 19-year-old Kevin Michael Whitaker was shot and killed in his family’s home in Sugar Land, Texas. His mother, Tricia Whitaker, 51, was also shot and died en route to the hospital; his father, Kent Whitaker, was shot and survived. The shootings occurred after the family returned from celebrating Bart Whitaker’s upcoming graduation.

Investigators concluded the attack was carried out by intruders who had been hired by Kevin’s older brother, Bart Whitaker, then 23. Bart reportedly arranged for two men to carry out the shooting and sustained a gunshot wound to his arm during the incident, a wound said to have been inflicted to make him appear to be a victim. Bart was arrested and charged with capital murder; in 2007 he was convicted and sentenced to death. Kent Whitaker has publicly forgiven his son and has campaigned against his execution.

What details about the night or people involved need more scrutiny, and does anyone have information that could shed light on Kevin’s last hours?