Seneca Frazier sees a post about Helena Kelly's disappearance on the Case Not Closed website, and she's hooked. After all, it was Kelly's disappearance five years ago that got Seneca interested in true crime in the first place. When Maddy Wright, a fellow CNC site user, invites Seneca to Connecticut to explore the case, she jumps on the chance. Brett, a CNC site user, and Aerin, Helena’s sister, join them in their search. The group begins to unravel shocking secrets, but little do they know the killer is watching and is willing to do what it takes to keep the truth from being revealed.