On the morning of June 10, 2015, deputies responding to a 911 call at a Lone Mountain Road home in Andersonville, Tennessee, found 66-year-old Karen A. Zahrobsky dead of a gunshot wound. A woman at the residence had called expressing concern for her mother’s safety; deputies arrived around 4:45 a.m. and discovered the fatality inside the house.

Investigators from the Anderson County Sheriff’s Department and the Tennessee Bureau of Investigation focused on a man living in the home, identified as William James McMillan, the 48-year-old boyfriend of Zahrobsky’s daughter, Christin Dixon. McMillan and Dixon both lived at the Lone Mountain Road residence with Zahrobsky. Authorities arrested McMillan later that night and originally charged him with first-degree murder, voluntary manslaughter, and aggravated assault. An arrest warrant stated McMillan pointed a 12-gauge shotgun at Zahrobsky’s head and pulled the trigger; it says he admitted intentionally pulling the trigger without provocation.

In March 2017 a grand jury indicted William James McMillan, then 50, on second-degree murder, a charge that superseded the initial filings. Does anyone have information about the household or the events that led to that early-morning 911 call?