Follows Catherine Jensen, a recently promoted homicide detective who enlists the help of Thomas Schaeffer, a forensic psychologist, to track down serial killers and relentlessly seeks the truth behind the disappearance of her brother.

A riveting new non-fiction series that delves into the world of infamous serial killers through a unique perspective rarely ever heard, as the family members of the killers come out of the shadows to reach out to the families of the victims. Each episode follows a different family’s journey, facilitated by Melissa Moore – daughter of Keith Hunter Jesperson, infamously known as the “Happy Face Killer” – as they connect with the families of the killer’s victims to express their sorrow and empathy.