Steven Watkins, 32, was killed on November 25, 2008, at the home of his estranged wife’s family in Ashland, Illinois. He had gone there to pick up his 17-month-old daughter for a court-ordered visit the day before a hearing on overnight visitation. Authorities found Watkins dead from a single gunshot wound to the back of the head after a 911 call in which Jennifer, his wife, said he had tried to attack her and her grandmother, Shirley Skinner.

Investigators reported little evidence of a struggle and were troubled by the shot having entered from behind. Family members at the scene were initially uncooperative. Ten months later, in October 2009, 74-year-old Shirley Skinner was arrested and charged with first-degree murder. At her May 2010 trial the prosecution argued the motive was fear the family would lose custody of the child; the defense said the state could not prove Skinner fired the shot. The jury returned a guilty verdict and Skinner was later sentenced to 55 years in prison.

What details about that night or the custody dispute might still help clarify what happened?