FBI Agent Atlee Pine's life was never the same after her twin sister, Mercy, was kidnapped --- and likely killed --- 30 years ago. After a lifetime of torturous uncertainty, Atlee's unresolved anger finally gets the better of her on the job, and she finds she has to deal with the demons of her past if she wants to remain with the FBI. Atlee and her assistant, Carol Blum, head back to Atlee's rural hometown in Georgia to see what they can uncover about the traumatic night Mercy was taken and Pine was almost killed. But soon after Atlee begins her investigation, a local woman is found ritualistically murdered, her face covered with a wedding veil --- and the first killing is quickly followed by a second bizarre murder.