Make Your Selection: When You See Me by Lisa Gardner

FBI Special Agent Kimberly Quincy and Sergeant Detective D.D. Warren follow digital bread crumbs left behind by deceased serial kidnapper Jacob Ness. When a disturbing piece of evidence is discovered in the hills of Georgia, they bring Flora Dane and true-crime savant Keith Edgar to a small town where something is deeply wrong. Quincy and D.D. must summon their considerable skills and experience to crack the most disturbing case of their careers.