When FBI Agent Sydney Merlot returns to her home town in northern California to wind down her late father's PI business, she soon finds herself on the wrong side of the aftermath of a high school shooting.
Sydney's childhood friend – who is now county sheriff – plus the local PD, the mayor's office, and most of the town's inhabitants, are convinced the horror ended when the gunman was killed. Now they just want to be left alone to mourn. But Sydney has other ideas – and she is not alone.
While having to work through her own personal grief, Sydney is openly intimidated and then receives anonymous threats. After discovering she is under surveillance, she begins to fear for her life. During her investigation she gains several allies, but as the days pass, Sydney doesn't know who to trust, and which new friends might actually turn out to be foes...