The Anniversary Killer wants Lydia Janssen to have someone to mourn during The Day of the Dead Celebration. He's given her three anniversary presents so far. 'Who' will he present her with for the fourth?Tennessee Deputy Sheriff Rick Hadley has a couple of unsolved murders. St. Louis Detectives Trish Rankin and John Hutsell have a stalking victim. As fate would have it, their cases are connected. The three investigators solve the case and gain national attention. They are celebrating in a St. Louis bar, when John receives a message from his aunt in Springfield, Missouri, "Elle's in trouble again." Out of a sense of family obligation, Hutsell begins a search for his cousin, Elle Wyatt. Hadley joins his friend and provides a new take on the 'Elle' situation. Elle doesn't know it yet, but her greatest challenge won't come from her past.