The 1999 murder of a 17-year-old sends shock waves across a rural Kentucky community; when the police investigation stalls, her family vows to solve it themselves; in their long hunt for justice, they discover that evil is sickeningly close to home.

When a young mother is found murdered in her car on New Year's Day, there's little evidence for police to go on; her case languishes for nearly two decades until the victim's sister teams up with a rookie officer to catch the killer.