The second female victim, known only as “Grace Doe” for nearly 30 years, is identified as Shauna Garber. Phelps’s investigation turns toward a new suspect in the murder of Dana Stidham (and possibly Shauna), while uncovering a revealing, lost recording of a new suspect - unheard until now. Phelps teams up with the detectives investigating the Shauna Garber case, evaluating similarities between her and Dana Stidham’s death. All of it leads Phelps to the doorstep of a potential killer walking the streets a free man, confronting the man some think is a prolific serial killer who has eluded law enforcement for some 34 years.